Topic: Automotive Relay Testing
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Answers to Common Questions
How to Test an Automotive Relay
Automotive relays are used to control any accessory that draws more than 30 amps of current, including power windows, lights, fog lights, air conditioner, fog horns, heated windows and many other accessories. When an accessory doesn't work,... Read More »
Source: http://www.ehow.com/how_5809980_test-automotive-relay.html?ref=Tr...
How to Troubleshoot an Automotive Relay
The use of relays in an automobile is to keep high amperage wires under the hood rather than in the cabin of the vehicle. The reasoning is that high amperage wires used for the headlights, fans, air conditioning and starter pose a risk of f... Read More »
Source: http://www.ehow.com/how_5468518_troubleshoot-automotive-relay.htm...
How to Wire an Automotive Relay
Every circuit added to a modern car should be run through an automotive relay. The factory wiring in modern cars is light gauge, and is not designed for additional loads. A relay can be used to power a new circuit with very little added cur... Read More »
Source: http://www.ehow.com/how_4912752_wire-automotive-relay.html
More Common Questions
Answers to Other Common Questions
An automotive relay takes a small signal from some sort of actuator switch such as a brake pedal sensor, ignition key or reverse safety switch and uses it to activate the required circuit.
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Source: http://www.ehow.com/facts_5516440_automotive-relay.html
When electrical accessories in your car don't work, perhaps the relay is bad. You can build a simple device to check any standard five-pin automotive relay. Or if you are a mechanic, you can build this device and use it whenever you suspect...
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Source: http://www.ehow.com/how_5819935_build-automotive-relay-checker.ht...
If you are adding a high power electric accessory to your vehicle, you can install a relay to operate it. For easier installation, use a pre-wired relay socket and extend its leads to the accessory by splicing them. Since vehicles vary, you...
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Source: http://www.ehow.com/how_5831403_install-automotive-relay-switch.h...
Every aspect of your car's performance is regulated by electricity coming from wires starting under the hood. You do not see the wires, but they control the lights, the heating and cooling controls, and even the early warning system that so...
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Source: http://www.ehow.com/how_7482559_test-automotive-wiring.html
1 Make sure your battery is fully charged before testing. Either take the vehicle for a long drive during the day or charge it with an appropriate battery charger. Allow the battery to sit for 12 hours after charging so that any surface cha...
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Source: http://www.ehow.com/how_5840378_test-automotive-battery.html?ref=...
When you turn the key in your car, you expect the engine to start. When it doesn't, you have to locate the problem. Starting problems usually begin with the battery, but they can also quickly spread to the starter and alternator. Determinin...
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Source: http://www.ehow.com/how_6182581_test-automotive-alternator.html
The relays in your car are electrical switches that are used to control different electrical components, such as the air conditioner, the fuel pump, and the radiator fans. Relays can malfunction and fail over time. Testing a relay to see if...
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Source: http://www.ehow.com/how_7604471_test-relays.html
