The unit was probably mis-wired at the factory, which would not be the least bit surprising.
The monitor has three leads. Red, which goes to a 12vdc positive that is on when the ACC or ignition is on, green, which would normally go to a 12vdc positive that is only on when in reverse, such as the reverse lights, and the ground. This is because normally, folks don't want them on all the time. So when the reverse lights are energized, it tells the monitor to display the image from the camera. But since AS uses this a a rear view mirror which is always on, they have to be wired differently. If the image is not displayed when in reverse, then the wires are not connected correctly, plain and simple.
To have the monitor stay on all the time, both positives likely must be powered, all the time. I replaced my Pyle monitor, but the one I have works in similar way. It sounds like they wired it backwards or perhaps have the ground where the positive should be normally connected to the reverse light.
These connections are located on the left (streetside) of the overhead compartment. To check it, pull it off by pulling down the compartment from the right (curbside) which is held in with compression tabs. The other side just had tabs sticking out, so you have to move it a bit down and then to the right to remove the compartment. You can either let it hang or disconnect the microphone and light connectors and set it out of the way.
Look to the left of the now empty hole and you will see some wires stuck in there. Pull them out and let them hang. Don't worry, you won't break anything. Follow the wires from the monitor until you find a connector and these red and green wires, and the ground wires. Check to see what they have them connected to into using a voltmeter. If mis-wired, put the red and green on the same positive lead that is on (note, it may be that you may not even have to connect the green at all, and they just put the ground on the wrong wire, so test it out first).
On a similar subject, another trouble-spot for the backup monitor is the fuse assembly to the camera. The camera is made by Pioneer (not Pyle) and it is powered by a positive connection that should be always on when the ignition or ACC is on. They stuffed this on the left side of the upper storage compartment where the AC adapter/12vdc and antenna amp is located over the driver's and passenger's head. You have to remove the left (streetside) wall, and reach down in the rat's nest to find a small retangular (about 1" long) silver box with connectors on either end. One side goes to the camera, and the other to the monitor. One has a standard glass type fuse assembly. The issue is the fuse assembly gets pushed into the hole, and since it's spring loaded, the connection can get a bit flaky if other wires push up against it (and they will). No connection-no picture. I moved mine so it is now in the back of the upper compartment but accessible, as it'a real pain to remove that wall as you have to unhook the cables to the TV and AC to pull it completely out to get to the fuse.
The manual for the monitor, or one like it, is found at:
Pyle - PLCM7200¬*-¬*On the Road¬*-¬*Backup Rearview Parking Cameras
How did I figure this out? I am too far from a dealer to bother replacing a $30 monitor, so after trying three different monitors, I traced the wires from the camera and found the fuse and fixed the issue once and for all.
Originally Posted by GloryBound
I have 2013 Interstate. I can't find earlier posts on this subject. Does anyone know how to fix this?