just a teaser for now....
I upgraded from standard stainless steel mirrors to the power mirror option (RPO CODE D48) on my '90 suburban a couple of years ago. I will be upgrading them later this week and will present a complete write up on what I am doing and where I got the parts to do it. But for now let's just say it's going to entail a bit more wiring and one more switch. Then things are going to be "flashing hot".