I did find a thing online explaining color codes for 96-97 crown vics that said white / pink was rear right + but I don't even have a white / pink wire on my marquis ;(
I found this via a google search
but am not 100% sure if it is accurate, and my car doesn't even have a pink/white wire.
1996-97 Ford Crown Victoria Stereo Information
Constant 12V+ Pink/Light Blue
Switched 12V+ Yellow/Black
Ground Black/Light Green
Illumination Light Blue/Red
Dimmer n/a
Amplifier Remote Blue
Antenna Rear Window, Diversity
Front Speakers 5 1/4" Doors
Left Front (+) Orange/Light Green
Left Front (-) Light Blue/White
Right Front (+) White/Light Green
Right Front (-) Dark Green/Orange
Rear Speakers 6" x 9" Rear Deck
Left Rear (+) Gray/Light Blue
Left Rear (-) Tan/Yellow
Right Rear (+) White/Pink
Right Rear (-) Orange/Red