Reverse camera trigger wire help

[h22221]

Hi

I am fitting a single din flip out screen to my e38 (1998) and just wanted to see if there is a reverse light trigger wire up at the front?

I assume either at the LKM/LCM or gear box....anyone know which wire and exactly how to find it!?

Thanks

[h22221]

Does anyone know if there is a reverse trigger to the mirror adjusting bit on the drivers side - as the passenger mirror tilts down surely there must be....anyone know which wire? or how best to get a new wire from there to the dash?

[Onizukachan]

Since you have to run the rca and most of them have a built in trigger wire, most people just tap the reverse light in the trunk.