The 12 volt system was dead on our first day trip to the bay so I figured it was the coach battery. I had already pulled it and got a free exchange from wally world when I found the un-attached ground wires. There was a 10 or 12 gauge bare copper and two white wires. All had lugs and appear to come down from the converter area. I used a 1/4-20 bolt and re-fastened the wires. Installed the battery and have 12 volts. I haven't powered up the Gen yet as it has been pouring the rain down since Saturday evening.