4-3 wire '98 sonoma mirr

  1. R

    New side mirror has 4 wires-old has 3-Convert?

    I have a 1998 GMC Sonoma. The driver's side mirror broke off. I ordered a replacement, and it fits okay, but it has 4-wires while the old mirror has only 3. Anybody know if I there's a way to make the 4-wire mirror operate?
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