Quote:
Originally Posted by z168
Are you serious? So unlike the E46 or E39, the X5 is prewired for rearfogs? 
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No it isn't. I did a bunch of research. You need the trailer/hitch module, then run wires from driver side to pass side. then depending on your year and model, you might have to deal with the rear tails to get the bulb holder in.
Trailer module is not cheap, then this, then the work. Really not as easy as some make it sound.