Question about Sun Nitro (BMW4300V) 7.8" Real TFT Sunvisor Monitor

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Nitro 8" visor monitors. bmwx-4300v, too dim

I installed these without a problem. When i first turned them on they were both on and you could barely see the picture. I mean. I had to shine a flashlight on them to see the no input screen. I disconnected the pass side from power and ground to reroute the wires and when i reconnected it it flashed dim then came on full and works great. I did the same with the other and it is still way too dim. There is no dimmer in the menu. They both use the 12v remote feed for the amps off the deck. They both have the same ground off the deck also. I tried disconnecting the working monitor and that didn't help. I used a voltmeter and everything read what it should be. The inline fuses are all in check. I don't know if there is a wire loose inside or what! I am not affraid of taking it apart i am good with small elctronics. Please help me if you can.

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