Reviving my old thread, as I am now really curious how my vehicle is wired, and what the deal is with my rear fog light errors.



I recently upgraded my taillight assemblies to LED's, and got them working correctly, besides the flickering issue, which i can live with. After doing those, i decided to look more into the rear fog light options I have available.


After poking around in BMW scanner and looking at live data, I'm getting some interesting results. The live data shows that when I hit the brakes, the rear fog lights are activating as well, but erroring saying that there not being detected. I've attached a couple screenshots of whats happening. And I also went and found the wiring diagrams, and it shows that my rear fog lights are wired to my trailer module plug, pins 10 and 12. So my question is, if i want these working as brake lights, can i simply run a wire from pins 10 and 12 to the rear fog connection, and will it be fine to do that to get them just as brake lights? The aftermarket lights i got already included the bulb and socket for the rear fog light.

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2001 BMW X5 4.4i

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