Radio help

[bjhcamaro]

Last week my friend convinced me to take apart my dashboard where the A/C controls, radio, and obc are. He was trying to see if my obc screen would work on his. Anyway the next week while driving the radio will turn off it seems when going over a bump or when the break lights would turn on.
So I took it all apart again can't finding anything burnt or wires exposed, but again the radio will turn off when I hit the turn signals, breaks, lights or even the wipers. Also the battery is now dead I have no idea where to start looking. Any ideas. Its an aftermarket head unit and haven't had any problems until the dash piece was taken out.

[1987E30project]

Charge the battery and run the car without plugging in the radio. Once you verify the car holds charge and it runs fine then plug in the radio. If it dies then you found the problem. If your car still dies without plugging in the radio then you probably a short somewhere in the wiring to the OBC or the radio. Be methodical in your troubleshooting. Check one area. Once you verify everything is good in that area move to the next. You'll find the problem.