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Originally Posted by SteveBooth
I went from a 3 wire light to a 4 wire. Come to find out, 2 of the wires were grounds.
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Exactly.
Thats because:
Quote:
LED's are polarity sensitive and if hooked up wrong they will not function at all.
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It sounds like you are referring to combination running lights and turn signals, therefore there would be a power wire and a ground for each function, for a total of 4 wires.
when you had them hooked up so they were dim, that would have been the running light wires , and when you hooked them up so they were bright, that would be the turn signal wires.
When you had it hooked up so it would work except when the headlights were on, you had the grounds inadvertently connected to the running light hot wire, and it was grounding back thru the headlight circuit, until the headlights were turned on, at which time the running light hot wire becomes energized also, therefore eliminating the path to ground.
BTW, I never said the flasher was
bad, just incorrect for use with LED lights.