[HUMMERcustoms.com/TAZ]

You just plug Nelson harness up to work.

There is one wire that instructions tell you what connector to hook to so you can have your PCM control the on and off temps for fan. You do have to go to a tuner shop that can hook up and turn on that function. It is there but, of course set in the off position. Most any turner shop should be able to do that for you for minimal fee. I think some of the newer handheld progrmers have the ability to turn fan control on.

Another solution is to hook the wire into a connector that turns fans on only when AC is running. When you get up above 25 mph the forced wind will cool the H2 if not using it hard. You can use this setup until you get to a shop or find someone with a newer handheld to set up fan control properly.

You could use an aftermarket unit to run electric fans but, I personally have not had good experience with them. Using the factory fan control bypass you can cut of fan by turning off the AC switch. I would not want to use this long but, not afraid to use it till i get a unit to turn that control on in the PCM.

TAZ