Mirror Conversion
It's not hard at all here's what you need, obviously both mirrors with the lights and heat. Get one relay, standard ISO 30 or 40 amp and a spool of 16 gauge wire from the local parts store. Also an assortment of connectors, butts, spade females and males, eyes etc... Your factory power mirrors have three wires, they are color coded the same for both sides so cut the plug off and use your plug off the old mirror. Then find a good ground, 12volt source, toggle switch or temp switch (little more complicated). wire the heated side to the relay and switch, wire the parking lights into the cab and out to a front light, you can pick up the turn signals at the front markers also if you choose to do so. There is nothing to it.