So I was adding the wiring for my radar detector and when I took the cover off the mirror mount, there was a blue/grey wire that was detatched. I can see the empty contact in the grey connector and have tried to extract it, but I will need to find out which extractor to buy. Does anyone know the wiring schematic that can tell me what this wire goes to? I think it's pin 1 or 4.

 

I will venture a guess. Does your car have BSM? If not that could be what it goes to.

 

I don't think I have BSM ... I definitely have the parking sensors. Isn't the BSM at the rear of the vehicle? Would it make sense to have a wire up near the rear view mirror?

 

I assumed the wrong mirror. I was thinking side view mirror. Not sure what that wire could be near the rear view mirror.

 

Possibly for high beam assist