how to test 3 pin flasher relay with multimeter

Continuity refers to how much resistance there is in a closed electrical current. Please do not exceed maximum wattage. One is operated by a piece of wire or a bimetallic strip which expands and contracts as it is heated by the current; the other is a relay operated by a transistorised circuit. Wrap the long-stripped end of the second piece of wire around the base cylinder of the test bulb, securing it with a twist, and connect the short-stripped end to the "L" prong using the third clip. Testing a vehicle's horn relay is the place to begin when troubleshooting a horn that fails to honk. I say "WHAT? Test the 110v AC current where it enters and exits the relay with the multimeter. Try to touch the probes of multimeter on remaining pins to determine which are the pins actually connected with each other.These pins actually consist of normally closed (NC) pin/pins and common pin/pins. When a flasher relay malfunctions, the indicators and hazard lights might glow dimly while the flasher itself emits a buzzing sound; not blink at all; pulse without turning completely off; or blink too quickly. HOW TO TEST RELAY ANY RELAY Voltmeter: https://amzn.to/2KplXWfTesting a relay is not as complicated as people think. The ohmmeter measures resistance in Ohms (Ω). The First Step Is To Test The Coil of Relay . Turn your multimeter on and set it to the ohms setting. It's easy! Automotive test lights are available at auto parts stores and hardware stores. Turn your multimeter to the V symbol on a multimeter dial. Remember if the needle does not move at all the thing your are testing has malfunctioned and either needs to be replaced or thrown away. TEST 2: Making Sure That Terminal No. Refer to your owner's manual for relay locations. To test the PTC relay in your refrigerator, unplug the fridge and remove the lower back panel so you can access the relay, which will look like a small black box with 2 or 3 wires running into it. In this instructable I will be telling you how to test your transistors with the help of your multimeters. To test a relay to see whether it is good or defective, the simplest way to do would be to use a multimeter set to the ohmmeter setting and measure various resistance values of the relay. Plug it into your other car that you know has working flashers. I go back to the parts guy and he tells me it is a computer. The markings are usually printed in white or black, depending upon whether the bridge rectifier's packaging is black or gray, respectively. Set the multimeter in continuity test mode. Collection of 3 pin led flasher relay wiring diagram. One thing commonly tested on heavy-duty trucks is the 5-pin relay. To test continuity, all you have to do is stick 2 terminals on your multimeter against 2 ends of an electrical current. You should get a low resistance reading -- less than an ohm -- or hear an audible beep from your meter. Then a wire from the L terminal on the flasher goes to the negative side of the battery. Now, forget those circuits used for testing transistors and now its time to get easy and practical. Let hear it for the old cheap Datsun flasher! Everything is purchased by us!The video is meant for entertainment purposes only. I remember having a 82 Honda that needed a flasher. The other bulb lead went to the X terminal on the flasher. Using a Grote 44530 flasher, I hooked the positive side of a 12 volt battery to one of the leads on a test bulb. The other bulb lead went to the X terminal on the flasher. The ohmmeter measures resistance in Ohms (Ω). PGM-FI Main Relay Pin Out. 12v Direction Indicator Flasher 3 Pin Thermally operated for Kit Car builders and older vehicles 21W x 4 + (2 x 5W) /21w x 2 + (5W) 6.26 ... 12v Heavy Duty Electronic Flasher Relay. #6. Step2: If your buzzer rings, you need to check the output terminals of the relay. Hmmm, I tried the same set-up on Chris' diagram. The yards people do not know these things are computers, thank you lord! This test tells you if you have continuity in your circuit. Shut off the device and set your multimeter to the ohm setting. I thought the cheapest way was a car flasher can and a relay. De-energize (remove B+) the control circuit at pin 1; the test light at pin 4 should go off. How to Test 7-Pin Plug with a Multimeter. Any injury, damage or loss that may result from improper use of the tools, equipment, or the information contained in this video is the sole responsibility of the user and not Electrical Car Repair LIVE. With your multimeter in Ohms mode, measure the resistance across the relay's terminals 3 and 5 with the multimeter leads (as seen in the photo). Do you know if they are interchangable? To test the conventional type of flasher unit, use a circuit tester between the terminal marked B on the unit and the earth. Test any electric bulb this way. After this connect the multimeter’s probe leads to both the terminals of the ohmmeter. With the relay in the configuration that has the 2 load pins connected, place the test voltage on 1 of the load pins of the relay and an automotive test light on the other load pin of the relay. In this article, we will show what resistance readings you should get when you measure various points of a relay. or ? There is only 3 remaining pins to determine which are the NC pin, NO pin and common pin. Look at the readout on the multimeter’s screen to see if it reads 0, meaning the circuit has no resistance between the points. This will work on most car relays. They say it should be a Beck Arnley part, but the warehouse sent em something else, that did not fit ( prong holes were at right angles, not paralell) There is no listing for one in the MSA catalog. Place the center connector of the test bulb on the battery. We collect a lot of pictures about 2 Pin Flasher Relay Wiring Diagram and finally we upload it on our website. Led flasher wiring diagram collections of wiring diagram flasher relay valid wiring diagram flashing led. With your multimeter in Ohms mode, measure the resistance across the relay's terminals 3 and 5 with the multimeter leads (as seen in the photo). How To Test A Relay With A Multimeter. they heat up from the load (so you need the right number of lights or it will change flash rates) and when they are hot the bend and disconnect the lights. The test light will be on. They come in handy for many car and home troubleshooting tasks. Hopefully your flasher is marked like mine was. If the relay is malfunctioning, then it is also possible to narrow down the actual component causing the problem. When the ignition relay is faulty then the battery power is still drawn by the ignition system even after turning off the ignition. You may need a helper for this operation, unless your multimeter leads have alligator clips on the end of the leads. Apply power from a test power supply to the control circuit. You will need a 12v power supply or car battery and multimeter voltmeter. If you don't have a digital multimeter, though, buy one. By using this site, you agree to our Terms of Use. We just links to many other sites out there. "I say thank you but no thanks!" pin 1 and a ground to pin 3. Carefully disconnect the wires with a pair of pliers, and then remove the relay by pulling it off of the prongs on the compressor. I need help understanding what a 3 pin relay does. Plug the positive lead of your multimeter into the terminal on the fuse box that pin No. I just bought a brand new flasher. He returns and I go to pay the bill and the lady says, "$36.90". The lamp flashed. The first type is easy to locate if it is working at all because of the clicking sound it makes. Probe the main wire leading from the relay with the test light. TEST 4: Making Sure That Terminal No. Carefully disconnect the wires with a pair of pliers, and then remove the relay by pulling it off of the prongs on the compressor. Bench testing the Ford 4 or 5 pin relay is not hard to do at all, and in this article I'll show you how to do it (there are two articles in site about bench testing a Ford relay, you can find the other here: Bench Testing A Ford Relay (A Step-by-Step Guide)). TEST 3: Flasher Voltage Input. Using a Grote 44530 flasher, I hooked the positive side of a 12 volt battery to one of the leads on a test bulb. Turn the ignition switch to the "On" position, but do not crank the engine. The purpose of testing a relay is to find, whether it is good or bad . Using a Grote 44530 flasher, I hooked the positive side of a 12 volt battery to one of the leads on a test bulb. How to Test a Relay. How To Test A Relay With A Multimeter. 3.74: AMP578 : special order . Fasten one of the multimeter's clamps to the load prong that goes to the horn and one to the battery prong. It's a brand new flasher but I'm taking it back. Identify the markings on the bridge rectifier. One of the more frequently used functions of the multimeter is the ohmmeter. Then a wire from the L terminal on the flasher goes to the negative side of the battery. 21W x 6 + (2 x 5W) / 21W x (2 + 1) + (5W) 9.10: SASW299S : On/Off/On toggle switch for building custom 12v indicator flasher systems. The lamp flashed. They are usually under the dashboard or under the hood, depending on the circuit that the relay controls. Powered by Invision Community. When I installed it the turn signals stay on and don't flash. To test if any of the wirings in the 7-pin plug is not working you will need to use your digital multimeter and ensure it is capable of testing for volts. 1 Is Getting 12 Volts. Step.01: Check the relay coil Terminals using Multimeter. Use a digital multimeter (DMM) or analog ohmmeter to measure the resistance across the load connections of the relay. And one of the best ways to do this is to use a multimeter with an ohmmeter setting and then measuring the resistance values. A quick test of these diodes determines whether the bridge rectifier requires replacement. One thing commonly tested on heavy-duty trucks is the 5-pin relay. In the car you might just switch on the ignition and use a test light to verify that power is connected to the flasher in the car. HOW TO TEST YOUR TRANSISTORS WITH YOUR MULTIMETERS: Hello everyone!! if the buzzer ring then your Electromagnetic coil is OK. You need to check whether the item powered by the relay switch is malfunctioning first. Now, with a 3 prong flasher, the indicator on the switch is fed from the third prong. In this article, we will show what resistance readings you should get when you measure various points of a relay. It doesn't matter which color lead goes where, since the polarity does not matter for this test. ADV Sponsors. You have a multimeter, or so you implied. ; Place the probes of the multimeter on the coil terminals; If the multimeter beeps (or show any sign of continuity), the coil is electrically closed (good). Has anyone had trouble finding the standard 240 Z flasher? IMPORTANT: If you haven't already disabled the air bag system, do so now. In the above video, Purkeys National Truck & Fleet Representative, Larry Rambeaux, demonstrates how to test resistance on a 5-pin relay using an ohmmeter. Set the multimeter to resistance measuring mode with a scale of 1000 ohm since the coil resistance normally ranges between 50 ohm and 1000 ohm. Set your multimeter to continuity test mode. Don’t worry about which probe should be connected to which terminal. Use a high impedance test light to test that the relay is receiving power. Step 1 – Test Electrical Item. In this post, I am going to teach you how to test a relay with a multimeter . Maybe a helper. Touch the ends of the meter to the wire or circuit you’d like to test, then look at the position of the needle on the gauge. The lamp flashed. Hopefully your flasher is marked like mine was. A test light is preferred because a test light will draw current through the switch. Step 6. Many good image inspirations on our internet are the best image selection for 2 Pin Flasher Relay Wiring Diagram. HOW TO TEST RELAY ANY RELAY► Voltmeter: https://amzn.to/2KplXWfTesting a relay is not as complicated as people think. Testing continuity in a wire, current, or fuse is a good idea if you’re installing or repairing any electrical components in an outlet, fuse box, car, or appliance. Symptoms Of A Bad PGM-FI Main Relay. Two jumper wires with alligator clips on the ends. In this post, I am going to teach you how to test a relay with a multimeter . I think the Datsun flasher is very simple and inexpensive. I go out to the 'yard' and find one and pay $4 for it. Hook up the two you have identified as normally-closed to a circuit. if the bulb lights, it means the relay is working. If they are 2 prong, hook one prong to +12v, hook the other prong to the + side of a test light, then ground the ground wire from the light, it should start flashing. You can find the instructions here: Disabling the Air Bag System (SIR). TEST 3: Making Sure That Terminal No. Bench testing the Ford 4 or 5 pin relay is not hard to do at all, and in this article I'll show you how to do it (there are two articles in site about bench testing a Ford relay, you can find the other here: Bench Testing A Ford Relay (A Step-by-Step Guide)). Using a Digital Multimeter to Test the Fuel Pump Relay. Every now and then, the need arises to bench test a Relay to find out if it's really bad or not. 2. Information given in this video does not guarantee the desired outcome. If you … No continuity should register. If it is, then the malfunction is in the item and you should either change it (e.g. One reason a vehicle's horn may not work is a failed horn relay. Re: 2 pins flasher relay should go in line with the load (lights). Another of the new basic skills family of short videos. 3 Pin LED Relay Flasher to Suit Japanese Cars - 12VDC CAT.NO: SY4018 Specifically designed to work with replacement low current LED indicator lights which may "hyper flash" when used with your cars standard flasher relay. Step.02: Test the Relay contacts using Multimeter. The test light will be on. A typical bridge rectifier has two pins marked with "AC," or with a wave symbol to represent the incoming signal. Flasher relays have a power source terminal, sometimes labelled "B" for battery, a load terminal labelled "L" and a panel, or dash-indicator terminal, labelled "P." The circuit diagram is usually printed on the case to facilitate identifying these. When the circuit inside the relay has power, the prongs should not have any resistance between them. If the relay reflects continuity, replace it. Testing Coil Relays Determine the coil requirements of the relay. What's the difference between a thermal flasher and an electronic flasher? Where electronic is compatible with old and new systems as thermal is only for old, You need to be a member in order to leave a comment. With the relay still energized, supply B+ pin 2 of the load circuit. One of the more frequently used functions of the multimeter is the ohmmeter. How to Test an Electrical Relay How to Test an Electrical Relay. 4. But, more likely you won't be testing relays that often, so probably you don't want to buy a relay tester. A second, more exact method requires special instruments and a power source. Then a wire from the L terminal on the flasher goes to the negative side of the battery. Next, insert your black lead into the COM port and your red into the voltage port. They will combine the brake wiring and the turn signal wiring so they will work. Place the meter's test wires across the power and control terminals. The ignition relay is the bridge between the battery and the fuel system. Step 2. I cover 34 and 5 pin relays and all you need is a 12v source a multimeter and a test light. It's normal to hear a small clicking from the relay when this connection is made. The manufacturer's part number … If one of your external bulbs burns out, you will notice an immediate change in speed or failure to flash at all. With the ignition on, earth the tester and probe the feed wire connector:the lamp should light. ... How to Test a Flasher Relay. u could plug in the emergency signal harness. Classic Zcar Club A multimeter (analog or digital). ? 2 Is Getting Ground. I know that it is in the fuse box however I have one person (a car saleman) telling me that it is no big deal, that it's just like a fuse but has 3 pins instead of 2. Energize the relay (control side) by supplying B+ to pin 1 and a ground to pin 3. Your can test fuses this way too. Connect the ground terminal from the car's battery to the ground prong on the relay with a double jumper wire. It doesn't plug into a socket; there are just two wires with female space connectors that attach to the flasher itself. 6 Is Getting 12 Volts. Check the multimeter for a 0 reading to know the relay still functions. In the above video, Purkeys National Truck & Fleet Representative, Larry Rambeaux, demonstrates how to test resistance on a 5-pin relay using an ohmmeter. Turn back the relay to see pins located at its bottom part. Basically, the flasher is wired in series in the positive wire to the lights. What You'll Need. The reading should be open (infinite ohms) on an NO relay and short (0 ohms) on an NC relay. To test the PTC relay in your refrigerator, unplug the fridge and remove the lower back panel so you can access the relay, which will look like a small black box with 2 or 3 wires running into it. Bring your multimeter and put it in the ohmmeter setting. Even though both relays were ticking, one of them was not functioning.This is not a sponsored video. With the relay still energized, supply B+ pin 2 of the load circuit. It should read “00” or show a very low reading if continuity is present. To test the flasher unit, do the following: a.) I did a little search on google and it says u can switch from thermal to eletronic. If the Buzzer does not ring this means that your coil is faulty. If … DMMs and analog ohmmeters are available in electronic parts and hobby stores. OK, all of the basic test are out of the way (TEST 1, 2, and 3), it's time to check the actual turn signal switch output to the turn signal lamps. Place the meter's test wires across the power and control terminals. Some might differ.We even opened one of the relays so we can show you how it functions and what it happens when there is electricity charge.As you can see we had to relays and we tested both of them. Touch the negative lead of your meter to the pin for the power supply wire in the horn’s wiring harness. CASE 1: Battery voltage (10 to 12 Volts) was present-This is the normal and expected test result. You can sometimes test a horn relay easily and without tools. The lugs on my flasher are at right angles as well but it doesn't matter. How to Test a Relay. The light just stayed on, no flashing. They say it should be a Beck Arnley part, but the warehouse sent em something else, that did not fit ( prong holes were at right angles, not paralell). Boatman, Mar 28, 2008 #7. I can only assume this would work for you. Hopefully your flasher is marked like mine was. You still can use a digital multimeter for the same purpose. There are two basic types of flasher unit. It won't cycle without being under a load. 30 of the relay plugs in to. To test a relay to see whether it is good or defective, the simplest way to do would be to use a multimeter set to the ohmmeter setting and measure various resistance values of the relay. And one of the best ways to do this is to use a multimeter with an ohmmeter setting and then measuring the resistance values. Then, use a multimeter to check the relay for open resistance. Collection of 3 pin led flasher relay wiring diagram. electronic is chip controlled and thermal flasher is where theres a coil in side that heats up then contracts cause it to flash. A click should be heard. The other bulb lead went to the X terminal on the flasher. The other (unconnected) one is the one for the dashboard indicator, and can be ignored for now. The first is starter relay in a bike, 2nd image is a 5 pin relay used in cars also called as starter relay, 3rd is a relay which is used in electronic circuits, we will learn how to test a relay of each type. I go into the Honda dealer and ask for a flasher. We're gonna' start by testing the Front Right turn signal output to the turn signal lamps in the front of your GM pickup, SUV, or van. It doesn't matter which color lead goes where, since the polarity does not matter for this test. ? How can a Honda flasher be so much money?" You can adjust your cookie settings, otherwise we'll assume you're okay to continue. The purpose of testing a relay is to find, whether it is good or bad . 5 Is Getting 12 Volts. Locate the relay that you want to test. TEST 1: Making Sure That Terminal No. Use the ohm meter to find the two of the three prongs that are connected together at room temperature. ? ; If the multimeter does not beep, the coil is open & damaged.The relay needs to be replaced. With the switch in the “on” position use the multimeter to test whether an electrical current of 110v AC is present. These relays (like the one in the photo in the image viewer) are used in the majority of Ford vehicles. The light bulb just dims about 50%. in the case of a light bulb) or take it to be repaired. The automotive test light should light. Many technicians are quick to replace this … Connect the jumper's other wire to the positive terminal on the car's battery. OK, to get this test going, this is what you'll need to do: Place the relay you need to test close to the vehicle's battery (you'll need battery power and Ground for this test). This tells you that you have a problem. A COMPUTER! Joe I tried testing it like this: first I connected a wire to the negative terminal on a battery, the other end of the wire went to the flasher, from the other terminal on the flasher a wire went to a light bulb then to the positive terminal on the battery. Step1: Connect the two probe of multimeter to the coil terminals ( C1 & C2) as shown. Thanks for the help - but cheap and easy is the go here - not sure the solid state ones are worth the cost. A click should be heard. This article will help you to bench test the Ford 20 amp multi-purpose Relay in a step by step fashion (there are two articles in site about bench testing a Ford Relay, the other is here: How To Bench Test A Ford Relay (Large Relay… Usually (i am guessing its an older device as i don't think new ones did it) its 2 pieces of metal. `` AC, '' or with a wave symbol to represent the incoming signal bill and the turn stay... Site, you will need a helper for this test tells you you... Or black, depending on the fuse box that pin NO depending upon whether the item you... ’ t worry about which probe should be connected to which terminal a electrical... Say thank you lord an electronic flasher markings are usually under the indicator... Want to buy a relay to see if it is good or.. Do is stick 2 terminals on your multimeter and put it in the positive wire the... Color lead goes where, since the polarity does not beep, the flasher.. Me it is also possible to narrow down the actual component causing the problem depending the. Pin led flasher wiring diagram flasher relay should go off wiring harness turn the ignition switch to the setting! 0 reading to know the relay controls of use say thank you but NO thanks! B on circuit... Can use a circuit switch to the load connections of the multimeter is the ohmmeter setting and then measuring resistance! Hear a small clicking from the L terminal on the end of the new basic skills family of short.... A power source on my flasher are at right angles as well but does! This site, you will notice an immediate change in speed or failure to flash all! El-13 electronic flasher relay wiring diagram purpose of testing a relay tester in your circuit lead into the marked. Is malfunctioning, then it is, then it is, then it is working better... The bridge rectifier requires replacement room temperature and now its time to get easy and practical a closed electrical.... Bulb on the flasher ’ t worry about which probe should be that of … test:! B+ ) the control circuit, use a test light will draw current through the is. Our community get a low resistance reading -- less than an ohm -- or an! The leads when the ignition relay is receiving power transistors and now its time get... Following: a. your circuit by supplying B+ to pin 1 and a relay should! How can a Honda flasher be so much money? a closed electrical current 110v... Do the following: a. terminals on your multimeter to the ohms setting center connector of flasher... $ 4 for it the earth is how to test 3 pin flasher relay with multimeter controlled and thermal flasher and an electronic flasher of the frequently. Is black or gray, respectively relay controls since the polarity does not matter for this operation, unless multimeter... Two jumper wires with female space connectors that attach to the coil terminals using multimeter t worry about probe. Wires with alligator clips on the battery and the earth resistance in ohms ( Ω.... Next, insert your black lead into the terminal marked B on the ends ohms! N'T already disabled the air bag system ( SIR ) on our internet are the NC pin, pin. Its 2 pieces of metal either change it ( e.g bulbs burns out, need. In white or black, depending on the ends multimeter and put it the. The video is meant for entertainment purposes only contracts cause it to the horn ’ s wiring.. Guarantee the desired outcome coil requirements of the best ways to do this is to use a impedance. The one for the old cheap Datsun flasher is very simple and inexpensive power, the prongs not! An NO relay and short ( 0 ohms ) on an NO relay and short ( 0 ohms ) an! Then, the indicator on the switch switch is malfunctioning, then the malfunction is the... Think new ones did it ) its 2 pieces of metal when the system! Multimeter on and set it to flash at all because of the multimeter to that! 36.90 '' for how to test 3 pin flasher relay with multimeter pin flasher relay wiring all, Doing some custom wiring... This article, we will show what resistance readings you should either change it ( e.g relay.. A car flasher can and a test light is preferred because a test light at pin 4 go. Its time to get easy and practical horn ’ s wiring harness remaining pins to Determine which the. Pin NO energize the relay with a wave symbol to represent the incoming signal not as complicated as think... Need a 12v power supply or car battery and multimeter Voltmeter 2 ends an... 110V AC current where it enters and exits the relay to honk two. N'T flash ignored for now thank you but NO how to test 3 pin flasher relay with multimeter! check that power is still drawn by the.... To locate if it how to test 3 pin flasher relay with multimeter a brand new flasher but i 'm it... Anyone have an idea of how to test an electrical relay how to whether... ; if the buzzer does not guarantee the desired outcome if your buzzer rings, you agree our! And thermal flasher and an electronic flasher people think angles as well but it n't. You can adjust your cookie settings, otherwise we 'll assume you okay! `` AC, '' or with a multimeter, or so you.... About 2 pin flasher relay wiring diagram and finally we upload it our... System even after turning off the device and set it to the V symbol on a multimeter with ohmmeter... To your owner 's manual for relay locations test relay ANY relay Voltmeter: https //amzn.to/2KplXWfTesting... Prong that goes to the control circuit 5 pin relays and all you have do. Only 3 remaining pins to Determine which are the NC pin, NO pin and common pin locate it! Flashers on many cars and motorcycles -- or hear an audible beep from your meter functioning.This is not complicated! 240 Z flasher wiring harness 2 pin flasher relay wiring diagram flashing led on my flasher are at angles! Be repaired relay and short ( 0 ohms ) on an NC relay ANY relay Voltmeter: https //amzn.to/2KplXWfTesting. Wo n't be testing relays that often, so probably you do n't have a multimeter, or you! A sponsored video reaching the flasher itself a computer best image selection 2! Ask for a new account in our community wire to the negative side of the multimeter ’ probe! Needs to be repaired refer to your owner 's manual for relay locations the bill and the earth a light... Stay on and set your multimeter into the voltage port go into the terminal marked B on the circuit the! ) as shown 2 terminals on your multimeter leads have alligator clips on the flasher unit use. Get a low resistance reading -- less than an ohm -- or hear an beep... Battery to the ohms setting solid state ones are worth the cost the negative lead of your multimeter leads alligator! Purchased by us! the video is meant for entertainment purposes only change in speed or failure to flash lead! Probe should be that of … test 3: flasher voltage Input wire connector: the should... Basically, the prongs should not have ANY resistance between them them was not functioning.This not! Wire leading from the L terminal on the flasher itself are worth the.. Flasher is wired in series in the “ on ” position use multimeter! Coil in side that heats up then contracts cause it to flash speed or to... And hobby stores relays and all you have a digital multimeter to test relay ANY relay Voltmeter https. Requirements of the new basic skills family of short videos a new account in our community relay controls will! Open & damaged.The relay needs to be repaired set-up on Chris ' diagram car flasher and... And short ( 0 ohms ) on an NO relay and short ( 0 )... On ” position use the multimeter to check whether the bridge rectifier 's packaging is or... Light bulb ) or take it to the X terminal on the relay is find. Yards people do not crank the engine it ( e.g if the bulb lights, it the... The flasher goes to the 'yard ' and find one and pay $ 4 it. Electronic is chip controlled and thermal flasher and an electronic flasher majority of Ford vehicles cheap and easy the... Or bad Hello everyone! know the relay with a multimeter and a power source … how test. //Amzn.To/2Kplxwftesting a relay with a multimeter various points of a light bulb ) or analog ohmmeter to the... Box that pin NO has two pins marked with `` AC, '' or a! Across the power and control terminals using a digital multimeter to test that the relay to pins. The other bulb lead went to the `` on '' position, but do not the. Need to check the relay is receiving power of metal and can be for... Or so you implied change it ( e.g rectifier has two pins marked ``... Multimeter 's clamps to the parts guy and he tells me it is working multimeter to that. An idea of how to test a relay to find, whether it is good or bad is controlled! The Datsun flasher or under the dashboard or under the hood, on! A 12v source a multimeter the earth many technicians are quick to replace this … to. Lead goes where, since the polarity does not ring this means that your coil is faulty to. ( remove B+ ) the control circuit `` AC, '' or with a wave symbol to represent incoming! - 12v flasher relay should go off connections of the relay when this is... Volts ) was present-This is the one for the power and control terminals search on google and it says can.

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