93 W900 master circuit breaker

Can anyone tell me where to find a master breaker on a 93 W 9? Batteries are hooked and no juice anywhere. Tia. I’ll go back looking some more.

 

There are 2 circuit breakers in the battery box. Both have juice on both sides.
12.8 volts at the batteries. I arced something not even realizing it I believe.
I think I will finally be able to solve the stating issue I have been fooling with for several months.

Here is another weird electrical issue. I have a Leon tune in the ecm. The truck has only been running in a mediocre fashion. A very recent injector issue resulting in 6 reman Bosch injectors. Lenny in the FB 60 series support is the MAN to go for injectors. On 2 separate occasions the engine has turned on the way a sled pulling truck would. It will bury the boost gauge in the blink of an eye on the first 3-4 shifts and then go back to running mediocre. An electrical issue that would tie in with my other problems?

 

I pulled it off and there isn't any power to it. It was dark, late and I was teed off so I went home. I'm going back shortly and have it. Hopefully day light will help.

AAha moment maybe. The entire electrical system grounds through the starter. I'll try a jumper around the starter to the frame .

 

Put on an old starter and I’m up and running. Going to load test some cables and wires and check out the solenoid in the battery box.

On the starter I removed the bronze bushing was worn out and floating on the shaft.

 

I think my long running starter issue has been resolved. I went ahead and replaced the solenoid in the battery box. It was the original. While doing that I found a wire loose on a circuit breaker. The post was stripped and I couldn’t tighten down the wire end. So I put a nut one size bigger on the post on retightened the nut.