Its basicly broke, and other then
jerry riggen it you'll have to buy a new one.
Any local body shop should be able to order on for you relativly cheap, cheapr then the stealership anyway.
Either drill out the holes for the old bolts and put bolts through with nuts on the inside. The dome head bolts are less obvious.
The triangle cover in the interior pops off.
The wire connector in down behind the door panel.
A long screw driver will reach the plug and unplug it.
Thiers 3 nuts, 10mm, that used to hold it on the mirror.