The rear speakers left and right are not working but the front speakers are okay. Why the rear speakers are not working? How could it be solved? Do you have layout diagram of the speaker connection?

1993 Jeep Grand Cherokee Stereo Wiring

Constant 12V+ Pink Switched 12V+ Purple/White Ground Black Illumination Orange/Black Dimmer n/a Antenna Trigger Green/Red Antenna Right Front Front Speakers 6 1/2" Doors Left Front (+) Green Left Front (-) Brown/Red Right Front (+) Purple Right Front (-) Blue/Red Rear Speakers 6 1/2" Rear Doors Left Rear (+) Brown/Yellow Left Rear (-) Brown/Blue Right Rear (+) Blue/White Right Rear (-) Blue/Orange

radio may have been wired improperly or fuse may have blown. First check fuses. Below is the color scheme for your radio wiring. The dimmer wire is White with a green stripe. This wire should be connected to the orange wire of your aftermarket stereo. If you have an unusual stereo, leave the factory wire unhooked (and insulated) until you can verify which wire on your stereo is for the light. Let me knoiw if you have questions.

Radio Constant 12V+ Wire: Blue/Yellow
Radio Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Wire: Dark Green
Dimmer Wire: White/Green
Antenna Trigger Wire: None
Front Speaker Size: 6 1/2?
Front Speaker Location: Doors
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Green
Right Front Speaker Wire (-): Blue
Rear Speaker Size: 6? x 9?
Rear Speaker Location: Rear Deck
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White

1995 Ford Aerostar Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Green/Yellow
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Red or Black
Car Radio Illumination Wire: Blue/Red
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: Orange/Blue
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5?
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Orange/Green
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): White/Green
Right Front Speaker Negative Wire (-): Black/White
Car Audio Rear Speakers Size: 3 1/2?
Car Audio Rear Speakers Location: Tail Gate
Left Rear Speaker Positive Wire (+): Pink/Green
Left Rear Speaker Negative Wire (-): Pink/Blue
Right Rear Speaker Positive Wire (+): Pink/Blue
Right Rear Speaker Negative Wire (-): Green/Orange

if you need further assistance please let me know. If this helped solve your problem then please feel free to rate it accordingly. Thanks, Midwest-tek

Okay it is very simple but if you don't know what your doing you should google this info "1999 ford mustang stereo wiring diagram" and something should pop up and you can usually print it out or download usually I print them out.

Good Luck!

2003 Kia Spectra Car Stereo Wiring Color Codes
Car Radio Battery Constant 12v+ Wire: Pink
Car Radio Accessory Switched 12v+ Wire: Green
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Black
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): White/Green
Left Front Speaker Negative Wire (-): White/Brown
Right Front Speaker Positive Wire (+): Yellow/White
Right Front Speaker Negative Wire (-): Yellow/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Black
Left Rear Speaker Negative Wire (-): Brown/Green
Right Rear Speaker Positive Wire (+): Light Green/Yellow
Right Rear Speaker Negative Wire (-): Ornage/Black

1992 Pontiac Grand Am Car Radio Stereo Audio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Good luck and merry xmass

2002 Ford Mustang Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Purple/Light Blue
Radio Switched 12V+ Wire: Black/Pink
Radio Ground Wire: Black/Light Green, Black
Radio Illumination Dimmer Wire: Light Blue/Red
Radio Antenna Trigger Wire: Orange/Light Blue
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Wire (+): Orange/Light Green
Left Front Speaker Wire (-): Light Blue/White
Right Front Speaker Wire (+): White/Light Green
Right Front Speaker Wire (-): Green/Orange
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Wire (+): Gray/Light Blue
Left Rear Speaker Wire (-): Tan/Yellow
Right Rear Speaker Wire (+): Orange/Red
Right Rear Speaker Wire (-): Brown/Pink

1997 Hyundai Sonata Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Red
Car Radio Switched 12V+ Wire: White/Green
Car Radio Ground Wire: Black
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Front Speakers Size: 4′
Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Brown/White
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): Brown/Yellow
Right Front Speaker Negative Wire (-): Black/Yellow
Rear Speakers Size: 6 1/2′
Rear Speakers Location: Door
Left Rear Speaker Positive Wire (+): Brown/Red
Left Rear Speaker Negative Wire (-): Black/Red
Right Rear Speaker Positive Wire (+): Brown/White
Right Rear Speaker Negative Wire (-): Black/Whi

1998 Chevrolet Blazer S-Series Stereo Wiring Constant 12V+ Orange Switched 12V+ Yellow Ground Black Illumination Gray Dimmer Brown Antenna Right Front Front Speakers 6 1/2" Doors Left Front (+) Tan Left Front (-) Gray Right Front (+) Light Green Right Front (-) Dark Green Rear Speakers 6 1/2" Rear Doors Left Rear (+) Brown Left Rear (-) Yellow Right Rear (+) Dark Blue Right Rear (-) Light Blue