I added a fuse block and grounding buss bar (from Home Depot) on the load side of the battery disconnect switch. This makes it simple to add various electrical mods avoiding a tangle of wires and fuses, etc. Make sure you also put a larger (perhaps) 50 Amp breaker between the fuse buss an dthe disconnect switch.
Fred & Denise
Santa Fe, NM
2007 Excel Classic 30RSO 2007 RAM 3500, Diesel, 6Spd Auto, SWD, 4x4, CC & LB