I had replaced my dash last winter and there were so many extra wires and wires that ran somewhere unknown that I could not even begin to track them down. Worse was the inadequate factory installed fuse box which caused everyone else to add those wires with the multitude of in line fuses. The situation got so bad that I was replacing fuses on each trip and then started to smell that sickening burned insulation smell. I brought it in to a Truck Wiring shop here in Milwaukee after they took a long hard look their suggestion was to tear everything out and start from scratch. This is what we did. Chummy sat in the shop all of January, February and part of March while they tore out all of the chassis wiring, designed and installed a complete new wiring harness. I now have a diagram of all my chassis wiring. There is a massive fuse box under the dash. They even installed a relay to provide adequate power to the rear air bag compressor and rebuilt the compressor. No fuses blow and I no longer smell wiring burn. Best of all the wiring is now up to date for 2007 vehicles and can accommodate my laptop, extra 12V
outlets, a GPS, backup camera or anything else I want to add in the future. The cost was $2300 and one I was happy to pay.