Both of the power mirrors on my 2000 4dr are not working. Neither of the mirrors are original (both from a junkyard) When my door was taken off the switch was checked and it seemed to be fine. The fuse was replaced. What else besides the mirror motors could be faulty?

 

Was the power & ground checked at the switch & out to the mirror connector for the various control selections? That should help narrow down the problem. If you have power/ground at the mirror connector that will light a small incandecent light bulb, then the wiring & switches are intact and the mirror motors are at fault, if not, then you'll need to work your way back until you have proper power supply (+12V & Ground).

THIS POST has the wiring schematics & connector views for the 99+ trucks that should help. Just make sure you are working with the 99+ information and not the 97 information that is in that post as well.