Hey, I am new to this site. I purchased my z140bh about 4 months ago, did bypass with moving mute wire, and grounded it and brake wire through a relay activated by remote wire. Worked great. After a few days I put a movie in for my daughter to watch on headrest monitors and they didn't work. Thought it was the monitors since headunit was working great. After a while of testing and trying, I found out I have to unhook bypass, unhook radio main harnesses to reset, then it plays on rear monitors. I hook bypass back up, and all works fine for a while. Then back out again. If i only unhook main har