No power to generator or accessory side of key switch

[Jon bennett]

We have a 2012 Newmar Mountain Aire motor home. We came home from a trip and park the bus and when I left it I forgot to hit the battery disconnect switch. Came back 48 hrs later and the house batteries were low so I plugged into shore power to charge them back up which they have done but the generator won't start and no power to anything on accessory side of key switch. Backup camera,power window,entry step. Nothing works. Checked voltage coming out of house batteries and it is 13.6. Bus will start and drive. Any help would be appreciated. Thanks

[poppopc]

Try resetting the disconnect switches.

[Jon bennett]

Yep did all that with no luck.

[Darwin]

I once had a bad ground to the generator which prevented it from starting. You can try checking the ground, I hope this helps.

[Jon bennett]

Just FYI for anyone reading this. The problem was a cracked fuse that feeds the accessories. They are located by the engine batteries and are a 150 amp fuse. Dealer said they have problems with these fuses on big trucks also. We checked it with a test light and it worked but it was cracked.