CV713 Dump truck

jojo, I removed the single wire on one side of the ground breaker. The truck cranked right up. Should it not have cranked?

Can the ground breaker go bad? Causing disconnect on rough roads.

jojo, is the ground breaker and starter relay on the fire wall below the windshield wiper motor? 

I have a 2006 CV 713 dump truck with AMI 370 engine. When on a rough road it will shut down everything. I can cut the key switch off and it will crank right back up and going. It gives a 9-2 code, which is power reset without key switch. It started about a year ago occasional. Now it is occurring several times a day. I have checked the grounds from the starter to engine block and to frame rail. What is the next step?