Hey guys, new to GM-Trucks forum. Long time tundra guy who made the switch and freakin love the truck! Wanted to give help to anyone looking to do this mod. The difficult part was finding instructions on how to remove the mirror and plastic covering for the Lane departure warning system. (attachment). Once you remove the plastic pieces covering the mirror you can remove the mirror with the allen wrench to unplug the connection.
The plug taps for the onstar mirror are 1) 12V hot is Pin #2 Violet with green stripe wire 2) Ground is Pin # 5 solid black wire.
I used the blend mount in my prior vehicles so decided to stick with this. It cost more than the others (performance package and rogue mounts). You can use the mirror tap or cheaper invisicord. I chose to go with the latter (invisicord #N01PL micro version 16 inch with fuse). 12 inch length could work but make sure you use the micro connector taps. Not a difficult to do. Be careful when removing plastic piece number 2 on the diagram. The side tabs can stretch and break easily. other than that a piece of cake...