Found the problem. Checked the GFI in the bathroom, shorted, 2 AC lines coming in, disconnected both, one shorted. Checked the outlet at the foot of the bed, shorted, found another outlet under the bed think it is for plugging in the block heater, shorted.
Crawled under the MH to chase the wiring back, saw a spot that it went back up on the frame and wasn't in conduit. Got in the storage bay with a flashlight and BINGO there it was; shiny copper on the edge of a sheetmetal divider... will pull the cable out this weekend!