electrical failure 08 Pleasure Way Excel TS
So, I walked out to the van yesterday and everything worked like normal. Not plugged in and generator off, my normal 12v accessories worked fine, lights, furnace, sensors, etc. Now, The house batteries were a little low (showing 1/3 full) so I kicked on the generator for a bit, upon turning it off all the power cut. Now nothing works at all, no lights, no monitoring system, nothing. It's like the van is dead. When I kick on the generator everything works again as normal. Can someone point me in the right direction?
Any help is appreciated.