Electrical, Dash lights come on and resets when I hit a bump

Some times when I hit a bump in the road, all the dash lights come on and the gauges cycle like I just turned the key off and back on, the radio with cut off and back on, and the head lights do the same. My CB radio doesn’t cut off and neither does 12v plus. When this happens, it literally is like a half second. It doesn’t stay off it’s like you just turned the key off and back on. The engine doesn’t die. The only code I got is low fuel pressure but I’m think it’s because it lost power. It’s annoying and I’ve tried grabbing and pulling all the wires everywhere, checked the power to the firewall, checked all my small cables on the batteries, wiggled all the ECM wires, I’m just stumped at this point and need a little guidance on where I should begin.


Thanks in advance

 

That’s the same thing I was thinking but it’s not killing the CB so it’s leading me to something not battery related. This morning I did find a bare spot on a wire in the harness that goes over the top of the engine and down by the AC compressor. Idk what wires run through there but I fixed that wire and haven’t had the issue yet again but I was moving the harness. Could’ve been somewhere else and I moved it. Going to run it a few hours we will see what it does. I appreciate your input though it all helps

 

Update: That was not the issue still doing it.

 

I guess when I get home I’ll thoroughly go over every power source I can find.