Color codes for 1993 Nissan Quest

SOURCE: looking for a color coded radio harness diagram

1994 Saab 9000 Series Stereo Wiring Constant 12V+ White/Blue Switched 12V+ Yellow/Red Ground Black Illumination Brown/White Dimmer n/a Antenna Trigger Green Antenna Left Rear Front Speakers 6 1/2" Side Panels Left Front (+) Blue/Green Left Front (-) Gray/Black Right Front (+) Red/Green Right Front (-) Brown/Black Rear Speakers 6 1/2" Rear Deck Left Rear (+) Blue/Yellow Left Rear (-) Gray/White Right Rear (+) Red/Yellow Right Rear (-) Brown/White

SOURCE: 1993 Pathfinder XE-V6. . stereo wiring connector

12V+ Constant is Red/black
12v+ Ignition is Blue
Ground ( ground on this vehicle requires you to ground the black wire on your new radio directly to a grounded bolt of some sort)
illumination - red/yellow
Left Front speaker + blue/white
left front speaker - blue/yellow
right front speaker + brown
right front speaker - brown/white
left rear + red
left rear - green
right rear + blue
right rear - pink

SOURCE: how to find out the radio wiring harness color

hi
1997 Mercury Cougar Car Audio Wiring Diagram

Car Radio Battery Constant 12v+ Wire: Black/Orange
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Black/Light Green
Car Radio Illumination Wire: Light Green
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: Dark Blue
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5′ x 7′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Orange/Light Green
Left Front Speaker Negative Wire (-): Light Blue/White
Right Front Speaker Positive Wire (+): White/Light Green
Right Front Speaker Negative Wire (-): Dark Green/Orange
Car Audio Rear Speakers Size: 5′ x 7′
Car Audio Rear Speakers Location: Side Panels
Left Rear Speaker Positive Wire (+): Pink/Light Green
Left Rear Speaker Negative Wire (-): Tan/Yellow
Right Rear Speaker Positive Wire (+): Pink/Light Blue
Right Rear Speaker Negative Wire (-): Brown/Pink

Testimonial: "well done "