E39 with LS swap - Brake Light Help
I swapped an LS3 into my 2001 525iT. It's currently running and reasonably complete but a couple days ago I realized my brake lights weren't working! I never thought to check since I didn't realize I had messed with anything...
It turns out I had run the brake signal to the GM ECU, which was disturbing the brake pedal signal to the "lighting module". I disconnected it expecting everything to work. But now my brake lights are on all the time!?
Does anyone have a clue where I should look? I've tried manually tinkering with the pedal sensor (ie. shorting, grounding, etc) with no luck. I don't think I have routed the brake signal to/through anything else so I'm a bit confused. Could it be ABS related?
"In theory, there is no difference between theory and practice, but in practice there is."
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