I suspect that a couple of Homelink buttons on my [interior] mirror aren't working: one button, the first works- pressing it results in the transmit LED lighting up; this does not happen when pressing the other two buttons (from left to right they'd be the 2nd and 3rd buttons). I have a spare mirror and would like to test it before I go about doing a swap. Does anyone have any guidance on testing this mirror, wiring diagram perhaps (thinking I just need to supply power and ground)?
I've...
How to test interior mirror functions?
I've...
How to test interior mirror functions?
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