I've have a 2006 Taurus SEL that I had to retire recently due to engine failure caused by my stupidity (that's another story). To ease the pain of separation (and to avoid getting rid of hundreds of dollars worth of spare parts and tow hitch) I purchased another '06 Taurus at a decent price but it is an SE model. In finding that the SE is minus many of the features I liked about the SEL, my thoughts turned to transferring what I could off of its predecessor to upgrade as much as I could without rewiring the whole car. My basic question would be, how much wiring do the two models share? My initial target is the rear-view mirror which is auto-dimming in the SEL and just a manual flip tab in the SE. I see two small wire harnesses and I'm guessing that one may have to do with the directional compass display in the instrument panel of the SEL. I'm not holding out a lot of hope for the compass direction in the vacuum florescent display of the SE unless connecting the external hardware causes it to magically appear.