installing auto dimming rear view mirrow
 

I have a 07 PAC tour AWD with the standard manual rear view mirrow, i found an auto dimmer from a 06 PAC,would like to know if the wiring for the auto dimmer is above the headliner,,I was pleasantly surprised when is found the factory wiring in place for the factory fog lights ,saved a ton of time and aggravation,,hoping the same senario would be true for the rear view