I recently purchased replacement mirrors for my '99 Dodge Ram 1500. When I put the door back together and tested, I found that when I tried to move the mirror leftwards or upwards, the mirror on the driver side would not move. I then tried to move the right hand side, which moved properly for a minute but then also exhibited no left/up movement.
At first I was thinking that perhaps these new mirrors are faulty, but then I moved the control stick back to left-side operation and tried to move the mirror to the left. To my dismay, the RIGHT-side mirror moved left.
This leads me to believe that the mirror control unit is faulty, not the mirrors themselves, since my assumption would be that the left-right twist control on the control unit just alternates which set of wires to send the control signals. Can anyone confirm this and possibly give me the part number for the replacement mirror control?