Why would no power be going through the wire to the inside rear view mirror on a '97 Toyota Avalon XLS?

I have a 95 XLS that had the same problem. Also had problems with intermittent dash lights in the lower AC controls area... The mirror wire had an intermittent connection in the fuse/junction box area on the lower front area by the drivers feet. I pulled on the wires and the 12+ appeared at the mirror. It has since gone out again and I just gave that panel area a couple of kicks with my left foot and it came back again. Guess there is a flaw in the connections down there - I thought I was the onlt one having that problem. Hope this helped.