Bmw E60 alarm led without factory alarm
 

Hi all


First of all, I apologize if this isn't the correct section to put this question.

A friend of mine have an e60 without factory alarm (and no pre-wiring) fitted and he wants to install the rearview mirror with the led, and wants the led to blink.
I already saw someone who did that, but I can't find.
Anyone here made this retrofit?


Thanks