Folks, I am getting the motorhome ready for a trip this weekend and I have run into a problem and I am hoping you all can help me out. I have a 93 Winnebago Brave with the Chevy 454 and 30 amp hook up. When running the generator my air conditioners are acting like they are on shore power, only one will run at a time and only when I throw the front / rear switch. Normally on generator I can run both units simultanesouly. I am going camping in West Texas and 2 working AC units is mandatory....any ideas?