To be honest, while I liked the Muth mirrors overall, I didn't like the lack of a plastic border around the mirror glass, which the OEM mirrors have. And both of my Muth mirrors were misaligned, so I had to remove the glass from the Muth "carriers" and reposition them with new double-sided 3M tape (which is also what Muth uses).
I was thinking about buying Muth's concave signal mirrors, but I hate giving up that much "regular" mirror space.
PS...look on the car body side of each front door connector. You may find that wire already on those connectors, and no pins on the corresponding locations of the connectors on the door. If that's the case, let me know, and I can send you two pins for the door connectors.
The mirrors are in now. The factory heated mirror wiring was not there, but I grounded to the door and only needed to run two wires (LED signal and heater) into the cabin. By the way, a McDonalds straw is perfect for running wiring through the rubber boot between the door and the cabin.
When it gets warm again I might add a pilot light to the heater circuit to let me know that the heated function is working.
I ran into my first ever connector that could not be de-pinned. The female end of the Muth signal harness was completely encased in plastic with no way to reach the clips. The male ends could be depinned though, and I used those pins with heavier gauge wire to power the heating pad.