Our pup was the victim of a not-so-handyman. A PO took out most of the 12V system, which I'm trying to put back in. He also added a 12V power lift (a truck winch mounted to the tongue and hooked to the lift cables) that doesn't connect to anything so I have to use jumper cables to raise and lower the roof. I think he wired it directly to the converter and burnt out the 12V half. So to that end, I've got a new converter which I have gotten someone who knows what they're doing to install. I want to rewire all the things he cut off and install a few new things as well before the new converter is put in so all the wiring will be right there. However I don't quite know how to do that. Here's what I need to do. 1. Battery. I have a new battery and box that will be mounted on the tongue. I need a positive and negative cable to run from it. The positive goes to the converter, the negative goes where? 2. Ghetto Power Lift. At the moment I have a + and a - wire that stick out of the crank door. I want to wire it directly to the battery with an inline fuse and a 3 position switch. Positive should go from the battery, through the fuse, through the switch to the winch, correct? Again, where does the negative go? Also, how do I find out how many amps the winch is pulling so I can get the correct fuse? 3. Water pump. He also removed the blue water system. The pump is laying under one of the benches with two cut off wires coming from it. It needs to go from the converter, through a switch to the pump. The water system is the next project after the electrical system so I want the pump installed correctly before I tackle that. 4. Radio. We bought a marine radio made for self contained units. I can wire the speakers, but I need to know how to hook the radio into the converter. 5. 12V Outlet. My wife wants an outlet to charge her phone. I've got a cigarette lighter type outlet. What needs to go where to make it work? 6. LED light. I want a light by the door so I can see inside to set up. I haven't bought this yet, but it may need to be wired with a switch. We outlined all this to the parts guy at the RV dealer and the converter we bought will handle the power needs. I'm going to get a roll of black wire for positive and a roll of white for negaitve and an assortment of connectors. What gauge wire should I be looking for?