Thor Forums

[Beau388]

Originally Posted by Jann

I was told the fuses under the hood are OEM fuses and don't relate to this issue. I checked the fuse box under the driver's seat. I'll try and attach a picture of it. The 2nd row down from the left didn't test good for any of the fuses but when we pulled them and checked, they were good fuses. So, my question is what is the Black connectors above each row of fuses? Is it some sort of relay switch that may impact the row of fuses below it? Could that affect the fuses from working even though they are good?
I appreciate any help I can get.
SORRY picture sideways...Black connectors on the left over each horizontal row is my question>

Thor MC has 5 major factories. Your coach was made in plant 750 - designed and engineered by those designers and engineers. Each Thor plant is an individual entity under the corporate umbrella. There are NO standards across the corporation.
A tour of Entrega luxury diesels plant and Thor MC plant 850 will show that they don't use the same chassis or manufacturing systems.


On a plant 750 coach, the fuse and circuit breaker panel down by the drivers foot is powered by a 100 amp circuit breaker under the hood by the chassis battery. It controls most of the items installed in the front cap and the drivers area. Any item deemed necessary for travel is supported by the Ford under hood fuse box. There are two exceptions that I know of - the dash radio (powered by the house batteries) and the power ports and USB ports in the dash (powered by the chassis battery through the Ford fuse box). On the underside of the fuse box lid is a diagram and list of what circuit each fuse or relay powers. This list is also in the Ford owners manual although it is not always accurate. Detroit Chassis (the assembler of the Ford stripped F53 chassis) has been known to make running changes not noted in the Ford manual.