Originally Posted by Daniel454

The Crossfire OEM 2004 Auto Dim mirorr has no compass in it. I am not sure of the exact thread but there was one or two on here that showed how to install it but again it doesnt have the compass. I used an aftermarket mirror, post with the link & model # is a couple posts up.

It comes with instructions but basically you just have to find a switched 12v supply which exists just in front of it on the Homelink / Garage door opener. You will have to also change out the mount for it if you go with te aftermarket one, which you wouldnt have to if you went with an original Crossfire model, but I wanted the compass.