85 Pace Arrow wiring problems

[Homeless2]

Just bought this MH and having lots of problems with the wiring (both 12v and 120v). Put in 2 new coach batteries and currently have it hooked up to outside power. Seems like only half of the coach lights work and only half the 120 receptacles work. This is a wiring nightmare but, for some reason, I think it's going to be a simple fix. Just can't figure it out yet.
I tried calling Fleetwood for a wiring schematic but they don't go back that far. I have the owners manual but there's not much info in that either. Any ideas?? Where should I start?
Any help would be greatly appreciated.
Thanks, Buck

[Alleyman]

I had similar frustration! reset the GFI near the bathroom sink. Everything is wired through this receptacle.

[JimElliott]

On my 83 Itasca the wires behind the fridge has a connector very high up and at times it will open up which in turn removes the lighting on the passenger side 100%......

Jim

[Nick-B]

I agree on the GFI reset. Or better yet, on coach that old, just replace all the GFI outlets - they can go bad. For any non-working 12v lights, start pulling fixtures and you may find loose wires or corroded connections that you'll have to redo. Just takes time and persistence to resolve issues like this on an older coach.

[Homeless2]

Just wanted to thank those who responded to my post.
I replaced the GFI and now have power to all 110v.
Now, on to finding the 12v problems. Seems like no power to bedroom lights and two double lights in kitchen and over couch. Wish me luck!!
---Buck