im wanting to buy a 2006 3500 quad cab with bed delete. want to put on a bradfordbuilt western hauler bed but my question is you cant order the tow group with the extra circuits for trailer lights . i looked at a 2500 this weekend and it had a group of wires that where marked at the rear and couldnt find the hookup for the brake controller. and i was wanting to know if any one knows is this separarte circuits for trailer and the bed all on the truck? would you hook the bed and the trailer on on the same circuit or separate. ? im just wanting to know all i can before this thing get ordered so any thing you could tell me would be greatly appreciate ron