FYI for everyone, I did buy the recommended mirrors, and they work great ! Switch wiring was little hard to figure out since my '94 does not have power mirrors as an option, and of course removing / re-installing the inside door panel sucked big time. I ended up using Org out of the switch for input 12V, Black as GND. Red as power to both L and R side, and tied one side of each mirror motor together to this Red pwr wire. Then there are 4 return wires (Grey, Purp/wht, Blu, Grn) for respectively Lmirror [Up/Dn] - [<-->] and Rmirror [Up/Dn] - [<-->].
Brown wire from the switch was not used ( I believe its for switch illumination). Only other issue is I bought a switch from the junkyard, out of a '95 Yukon, and its attached harness is what wires I'm talking about. I also ordered a NEW switch from LMC trucks for a '05 K2500 truck, and it did NOT work. Replacement is on the way, but I'm worried about either wiring issues, or the longevity of this used switch from the junkyard. Do these switches fail often ?
This switch is ROUND with an outside disc that you press for up/dn and <--> movement. Small 3 way pivot switch in the center of the disc for L and R and OFF select.
Anyway, its working now, the wife is happy she already drove it at night, and I'm a hero at least until I get in the doghouse again...Mirrors WELL WORTH the money.
