That's a good question. Are you sure it was the relay inside the speaker hole and down below? I'll work on some simplified schematics so that if you do receive a unit, you can be sure you're are installing it correctly. I REALLY would doubt that BMW would change the wiring by much. It might just be a matter or matching up wiring colors.
BTW - what year/model were the cars that you speak of?
It only SEEMS like it would be.
BTW - what year/model were the cars that you speak of?
It only SEEMS like it would be.
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