Has anyone tried swapping/replacing a manual dimming center rear view mirror with an auto dimming version?
I forgot about that reverse sensing wire, that can be skipped or ignored. I think Eric with his 99 Sport with Mounty front end was one of the first to do it here. He was the first to make a big thread about his 302 swap also, boy that's been a long time. I hope he is doing well.
Yes, those are two different circuits. I don't know how many versions there may be of them, but I've liked the one in my 98's the best, which have a sliding adjustment for the light timer.
My 93 Limited had a separate switch on the mirror to turn off the automatic light function, but not control of the time it'd stay on when the key is turned off. I forgot how that was adjusted, but I kept that mirror for my 99(the glass was all broken and the mirror already gone(in JY for a short time)). I prefer the older type that has a set screw to mount the mirror. That one has always stayed tight, the 98 mirrors vibrate a little.
Yes, that's an easy project really. When I was rewiring my 99 using the 93 mirror, I had to locate the main headlight wire at the switch, and found it in the headliner wiring(99 Limited) to tap into. The wire you will need is a small gauge like everything at the switch, and it takes almost no current to trigger the lights through that wire. So any mirror with light controls in it can trigger the lights of the 95+ Explorers.
I love the low current systems, though with lots of relays it's much harder to trace things if you have to.