I have a 1989 F250 5.0 v8 4x4. I am having a problem where every time I hit a bump in the road my radio will go out and my AntiLock rear light will flash. I just bought the truck a couple weaks ago, never had much of a problem with the light. The light was on when I bought the truck, but now the radio cuts out. Its kind of annoying. Could it be the way the radio was wired? I have not ripped in to it yet. Or could it be a bad sensor? Any one else have this same problem? Any insight is much appreciated. Thank you.

 

OEM radio or aftermarket? Never know where someone tapped into the harness for power if it is not the stock radio.

 

It is an aftermarket radio. Sorry I forgot to mention that.