12 Volt system problem

Ok I solved the problem. When I first got it and looked in the genny compartment I noticed 4 boxes with genny solenoids in them that looked new and 3 film canisters full of fuses. That should have set off my alarm but for some reason I just put it off to the previous owner was over prepared. Today I tested the solenoids in the boxes. 3 are bad but look brand new and 1 is a good new one. So then I knew there's a problem that's burning up solenoids and blowing fuses. I started at the front solenoid by the house battery and traced the cable back cutting all the ties holding it to the frame and dropping it to the ground. Under the control box the coach builder attached an aluminum block to the frame to connect all the grounds to. battery cable was run over top of the block and tied tightly to it. When I cut it loose I found that the cable had chafed against the block and was exposed to it. Apparently not a constant short but enough to cause problems. So I fixed the bad part of the cable, rerouted it and everything works as it should. Had I not found the short the potential for disaster was high. So yeah Bordercollie it was a problem due to age and incorrectly routing the cable in the first place. Thanks everyone.

It's not hard to imagine the havoc, damage, and cost to modern electronics that a stupid mistake like this by a coach builder could cause.