Picked up my 4X4 dbl cab w/sport yesterday evening. Started the mirror install this morning. Tried tapping the mirror mount up, as earlier post suggested, but it didn't seem to want to move. I began applying pressure down on the mirror - not a lot, but steady, even pressure and the mirror released. The Prius mirror slid right on, then I ran the wires(including the radar detector wires) under the headliner as in the Toyota instructions adding the EC mirror(normal Toyota accessory without the Homelink), except I did not remove the overhead console, then down behind the A-pillar trim to the fuse box. The Homelink requires constant 12V power and the EC part of the mirror needs switched 12V. Works like a charm. Now I have temp & compass in the overhead console, an EC mirror and Homelink.