Headlight Relay Kits

Frank Mopar said

I bought the ebay kit ($9.99) for my H4 lights. 16ga wires do not get hot, or warm for that matter.

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What is the voltage at the 87 terminal on the relay, with the lights on, to the battery ground. Now what is the voltage at the bulb terminal with the lights on. This will tell you the voltage drop in the wire.