Hi all I am new to the forum. I know this has been beaten by every stick possible i just cant seem to find my answer. Maybe Im not searching the correct terms. I have a 99 coleman cheyenne. I added a battery to it. the wireing was there but no battery, so heres my issue and what ive come up with. First The interior lights, heater ETC, all work when the camper is connected to my dodge ram 2500 with the pig tail (7PIN). When i try to use the battery i get nothing. i followed the online manual and popped off the back panel of the camper to access where the positive wire from pig tail harness ends. I get power all the way to the converter when it is plugged into my truck. When i hook up battery the power never makes it to the converter. I even tried splicing the black positive wire and white ground thats in the pig tail to connect the battery thinking the original battery hookup wires were bad. but no luck. If there is a genius out there that can help it would be greatly appriciated.