Just picked up a 1996 e-150 Club Wagon Chateau. It has dual batteries under the hood (5.0 V8) I gather that the larger drivers side battery is the starting battery and the slimmer passenger side battery is the "house" battery. But what exactly is on the house battery vs the starting battery? Are all the overhead lights, door jam lights, etc on the house battery or do some of these draw from the starting battery? What about the Cigarette lighter? I have only found the one in the dash so far not sure if there are any other AUX outlets out back.