I got the 7876 the day it came out and besides a TV tuner and color changing display (from green to red), there isn't any noticeable difference. If I remember, your deck is blue? If you want the antenna to only go down when the stereo shuts off, hok the antenna remote wire to the HU accesory wire instead of the HU antenna remote wire. This way the antenna will be up as long as the radio is on.
