1) does anyone have a wire color diagram for the plug? I have four loose wires that are not speakers, 12v switched, or 12v constant.
Does your car have the standard CVPI basic wiring? It's possible that a previous owner didn't know and just bought the wrong one and that's why you have extra wires hanging around. Your '11 may have the wire for steering wheel controls in it as well, I know some did.
The CVPI generally got the 16 pin plug for the radio,
the other models got a 24 pin plug for extras.
2) where can I pull a signal to let my system know it's in reverse?
There is a reverse signal going into the LCM.
3) where can I pull dimmer signal to dim my system with my instrument cluster?
The radio harness in stock form has an Orange/Black or Light Blue/Red wire going into it for the illumination which will generally dim an aftermarket stereo.
The future is very fast and extremely quiet...but a bit burny.
1989 Ford Crown Victoria Country Squire - 347
2005 Crown Victoria LX Sport with Stainless Works full exhaust, Addco swaybars, Heinous control arms, Powerslot rotors, Hawk HPS padsAccufab plenum
for a DBW PantherBlue LED buttons/switches