Can’t find main DC bus / grounding issue

[BeebopInPB]

2011 Sea Ray 260 Sundeck

having an electrical problem I think is a result of a bad ground.
Engine starts, but none of the accessory devices turn on ( blower, lights, bilge pump, radio, water pump)
No continuity between negative ground Terminal on fuse block that grounds these devices, and the negative batt terminal. I don’t believe the radio is on this fuse block so the ground issue is somewhere closer the the battery.
Schematic mentioned a main DC bus, and for the life of me I cannot find it.
Does anyone know where it is? Has anyone had this problem before?

 

[Stee6043]

According to your owners manual your man DC ground bus is in the bilge. You may want to swing over to the 260 specific thread (in the model specific area of this board) to ask this question again. I'm sure someone with a 260 can point you in the right direction.

 

[BeebopInPB]

I appreciate your reply, and will do that.

 

[Lazy Daze]

Did you check your helm breaker? Look in your manual - electrical wiring diagrams. It's either near a battery or a jump post. Slide the little arm back in.

This will make more sense after you look at your wiring diagram and find the breaker.

 

[BeebopInPB]

Did you check your helm breaker? Look in your manual - electrical wiring diagrams. It's either near a battery or a jump post. Slide the little arm back in.

This will make more sense after you look at your wiring diagram and find the breaker.

I did check that. On advise of previous reply, I re-opened this thread here, much more detail on my efforts:

https://clubsearay.com/index.php?th...engine-starts-but-no-systems-power-up.112965/