quattroworld

On the section of the wiring harness that goes to the ICM's there is another long section that is about 4.5 feet long that ends at two plugs, one with three wires (pictured below) and the second plug is a one wire plug that goes to the back of the alternator.

What is the one with three wires to?

Thanks in advance.. Hope to show some pics/vid of her up and running tomorrow unless I seriously fu@%ed something up :/