what is the voltage of remote turn on

sounds like a loose ground. when you tested the power for the amps did you check them using the amps ground or did you use a separate ground?

When the amp shut off, I had my DVOM ready to go - sitting next to the main amp. I tested the 12v + GND (at the amp) and the remote 12v + GND. Both had 12volts, but the amp was off. I pulled the amp loose from the where its mounted (a wagon - its on the wall between the rear wheel and the hatch). The amp came on....and after 9hrs on the road today - bumps and turns galore - never once shut off. I want to re-attach it to the wall and call it good, but need to make sure it will be alright for the new owner. He's flying in in 3 weeks and driving it home (about 2,000 miles). Thats a long drive with no radio if it shuts off again.