I looked at all the wiring companies but could not find a harness that suited my truck without other uneeded connections. I decided that I would do my own and frankly it is quite easy on a stock AD truck. Using the wiring schematic in the shop manual I replicated the wires. I just did one wire at a time, removing, duplicating and replacing. A good crimping tool is a necessity. My truck is 12 volt and I used the wire gauge on the schematic which is more than adequate.
