I just picked up a 1998 Travel Aire Drifter DT185. Can?t find any information online about it. Anyway the guy I got it off of has the battery hooked up backwards. He told me it was the only way to get the lights to turn on. The battery is dead so I got some new ones. My question is how much damage if any could he have done to the unit doing this. I have not gone through the fuses yet but I?m going boon docking soon and need the battery but don?t want to hook up and damage the batteries I have, or the unit. Also does anyone know if there is a shut off switch, or any hidden fuses that are on this model?