My second generation 2012 TSX's has a rearview mirror with auto dimming. This feature doesn't work because the wiring harness tore away from the connector at the back side of the mirror. The wiring harness consists of three individual wires and the connector has three slots for the three wires. Does anyone know which wire goes into which slot in the rearview mirror connector?

 

At quick glance,
Lt BLue turns to gray, goes to pin 3, Back Light -
Brown goes to pin 1, turned on by Ignition
Brown turns to blk, is ground

... turns to.. whatever --- this side is closest to mirror

on the wiring side (female terminals) looks like pins are in a row, 1 is far left, then 2, 3. Right 4 are not connected.

 

Does this help? The wires are to the passenger side of the mirror (left side as you're looking in through the windshield).

 

Thank you RTM and CU2wagon for answering my question. You have been very helpful.