Re: Upgrading the audio in my 2011 GC - full overhaul need opinions....
The OEM mirror on my Laredo E was simply screwed to a bracket on the windshield. One screw and it slides off. The new mirror simply screws into that bracket on the windshield.
As for power, I tapped into the switched 12V power plug in the center console storage bin. This involved fishing wire through the overhead console, under the headliner and down the A pillar on the passenger side. Tricky, but doable with a wire fishing tool.
If you already have the autodimming mirror then your job is much easier. Use a voltmeter to figure out which wire is ground and which is hot.
2014 Grand Cherokee Limited V6 4x4