Joined: Jun 2017
Location: San Joaquin Valley
You could also check the wire harness without cutting into it first.
For an automatic transmission car.
Chock the wheels, set the parking brake and put the car in full accessory mode by pressing the start button without depressing the brake pedal.
With the car in full accessory mode, pop the trunk, depress the brake pedal without pressing the start button (because you want the engine off), put the car in reverse to turn on the camera.
Get out of the car and go back and giggle the harness along the passenger trunk hinge. Look through the passenger side window at the backup screen while giggling the wire harness. if the image on the screen from the camera changes, you know that is where the problem is.
2010 Kona Blue GT Premium traded in June 2016 for a 2016 Oxford White GT Premium with Ceramic interior. Automatic transmission, Sync3, p265/35r20 tires, Shaker audio system. Other vehicles 1964 Pontiac Catalina 389, 1972 Pontiac Lemans 400, 1967 Ford F-100 352, 2016 Ford F-350 Dually, 2003 Ford Crown Victoria LX.