LED Headlights- Resistors?

lundi 27 juillet 2015

Anyone else have issues with switching to LEDs for the highbeams?
I installed a set of H11/H9 from OPT7 and I'm getting some cross feed from the fog lights. With the low beams on and the fog lights switched on the LED high beams will dimly illuminate. If I put the stock halogen bulbs in I don't have any issues and it operates normally.

Looking at the wiring diagram it looks like it's possible that the high beam could be back feeding through the fog light relay coil to ground through the fog light switch. The LEDs are low enough resistance that it's enough for them to dimly illuminate. The halogen bulbs have enough resistance that they don't illuminate. At least that's my theory. I think if I wire a resistor into the LED harness it should fix the problem.

However, the reason I'm asking the question is I've extensively altered my harness for my swap so I wanted to see if anyone else had a similar issue with the stock harness. I'm just hoping I don't have a ground I've overlooked and now I need to spend hours digging back through the harness to find it.


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