Speed Sensor Wire and Reverse Wire
 

This is my first post on this forum. I'm installing an aftermarket navigation system in my 2002 X5. Could anyone please tell me the color of the speed sensor wire on my vehicle and also the location of the reverse wire?

Two options for speed pulse:

Yellow with red stripe = processed left front wheel signal, available on ABS control unit

Black with white stripe = speedo speed pulse output signal, available on the radio connector

The BMW nav uses the ABS speed output signal, it's more accurate