Backup lights Entegra 30x

[Modestomij]

Backup lights and camera suddenly stopped working when I put it in reverse. Can’t find a fuse that might be blown. The camera still works ifI turn it on manually using the dash display. Help??

[JimD]

Since the camera tests good I would look at the switch that activates the backup lights. It will somehow be activated by the shift lever. The camera trigger signal would be picked up from the backup light circuit. Best guess.

[bucko]

What JimD says. Do a search for a wiring schematic for the cab model of your rig.

You did not specify the year and make of your cab, so it's hard to give details. As an example, is it a Ford E450? What year?