My reverselamp and reversesensors stop working.
Do anyone have some ideas?
Tryed to find a diagram were the reverse signal comes from, relay or switch or communications box.
Please give me help:

 

Before you do anything else, check for a blown fuse. Never over look the obvious!!

 

I have checked the fuse, its ok.

It is a separate reverse light under the bumper connected with a separate cable and it get power when the reverse is in.
That cable comes in original harness from the front.
Could it be a relay somewhere for extra reverselamp.
Where is the normal place to put in then?

There is no power to left and right reverse lamp and the object detector.

I found a connection called 42 on the BCM

 

Check all the fuses. It might be tied in with one of the others.

 

could be a corroded power wire for the backup lights and park assit.i would check the wiring harness on the passenger side of vehicle under the carpet.i have found bad wiring under the carpet where the wiring harness runs. what happens is the wiring corrodeds from water and salt being under the carpet.it may vary depending if you get snow like we do up north.but like mentioned if all fuses check out ok ,i would be looking for a wiring issue.hope this helps.