[GMcKenzie]

Originally Posted by Firewall

This guy makes and sells wiring harnesses to make the mirrors work the way you want. He needs detailed information about your truck and he is very responsive. If you are a DIY he also sells a cheaper version.

http://www.gm-trucks.com/forums/topi...ors-explained/

Well, that was a good read for a bit of insomnia I had last night.