Relays have 2 inputs constant power in and a switched power, and have one out put which puts the constant input on the output terminal when switch goes high.
Originally Posted by ZachBimmer540i
and how do you test the relays themselves is the question? tried putting them to a multi-meter on 30 and 87 I think and the needle doesnt move for some even the new ones I bought.
You can detach relay...connect voltmeter on output...constant 12v on input and then have a free wire to touch to switched input. You should see out put go high and low as you apply 12v
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