Most RV's have two batteries. Check with an RV parts dealer as to what you need to make it work.
Gary VanderMolen ----- Original Message ----- > Anybody ever install two batteries in their vehicle ? I would of > thought there would be some kind of easy device that allowed you to > hook them up saftly but I haven't been able to Google one up.... or even > clear instructions on how to do this. Has anybody done this?