12 volt power loss to cabin/dash

[Mramps]

I have a 1989 Sundancer 268.
I have completely lost 12 volt power to the cabin and dash.I have identified the power wire leading to the cabin in the engine compartment. I tried to hook this straight to battery. Nothing. Not sure what else to do. I think their is a hidden 110 amp fuse.. I am good at troubleshooting but this one has got me stumped. Hoping someone has a wiring diagram or advice

 

[GATORB8]

Any chance it’s the 30 amp breaker in the dist panel? Could pull the breaker and see if there is power on the feed.

https://s3.amazonaws.com/srweb-pvt-...ic/parts-manuals/1989__1989-268-SUNDANCER.pdf

 

[jima]

Any chance it’s the 30 amp breaker in the dist panel? Could pull the breaker and see if there is power on the feed.

https://s3.amazonaws.com/srweb-pvt-...ic/parts-manuals/1989__1989-268-SUNDANCER.pdf

 

[Espos4]

I have a 1989 Sundancer 268.
I have completely lost 12 volt power to the cabin and dash.I have identified the power wire leading to the cabin in the engine compartment. I tried to hook this straight to battery. Nothing. Not sure what else to do. I think their is a hidden 110 amp fuse.. I am good at troubleshooting but this one has got me stumped. Hoping someone has a wiring diagram or advice

Are you sure that you lost power and not ground?

What are you using for a ground for your test light?

Just to verify, you could check continuity from the cabin/dash back to the battery. One continuity test for the ground side, and another test for the power side.