Radio wiring problem

Here are the wire colors and their corresponding functions for the three OEM radio plugs in a 1993 Chevy C1500:
Plug A:

• Yellow: Battery
• Red: Ignition
• Black: Ground
• Gray: Illumination
• Brown: Dimmer
• Light Green: Left Front Speaker (+)
• Tan: Left Front Speaker (-)
• Dark Green: Right Front Speaker (+)
• Light Blue: Right Front Speaker (-)

Plug B:

• Orange: Constant 12V+
• Yellow: Switched 12V+
• Black: Ground
• Gray: Illumination
• Brown: Dimmer
• Light Green: Left Rear Speaker (+)
• Dark Green: Left Rear Speaker (-)
• Brown/White: Right Rear Speaker (+)
• Yellow/Black: Right Rear Speaker (-)

Plug C:

• White: Left Rear Speaker (+)
• Gray: Left Rear Speaker (-)
• Purple: Right Rear Speaker (+)
• Green: Right Rear Speaker (-)

Note that the wire colors may vary slightly depending on the specific year and model of the vehicle, as well as any modifications that may have been made to the wiring harness. Also, keep in mind that it's important to properly match the wires from the harness to those on the radio to ensure proper functionality and avoid damaging the radio or other components in the vehicle.

Audio Item Wire Color Polarity Wire Location Radio 12V red/white + radio, black 14 pin plug, pin 1 Radio Ground black/white - radio, black 14 pin plug, pin 8 Radio Ignition (low speed GMLAN) Radio Illumination yellow (dimmer) + radio, black 14 pin plug, pin 7 Left Front Speaker (+/-) dk. blue - lt. blue +,- radio, black 14 pin plug, pins 2 - 9 Right Front Speaker (+/-) orange - dk. green +,- radio, black 14 pin plug, pins 3 - 10 Left Rear Speaker (+/-) tan - white +,- radio, purple 16 pin plug, pins 5 - 13 Right Rear Speaker (+/-) tan - orange +,- radio, purple 16 pin plug, pins 6 - 14 Satellite Radio 12 Volts red/white + Digital Radio under driv dash, 16 pin plug, pin 16 Satellite Radio Ground black/white - Digital Radio under driv dash, 16 pin plug, pin 9 Satellite Radio Ignition (low speed GMLAN) Satellite Radio Antenna (coaxial cable) Satellite Audio Left (+/-) brown/white - tan/white +,- Digital Radio, 16 pin plug, pins 2 and 1 Satellite Audio Right (+/-) dk. green/white - gray +,- Digital Radio, 16 pin plug, pins 3 and 4 2016 Chevrolet Express Van Wiring

1985 Toyota Corolla Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Blue/Yellow
Radio Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Wire: Green
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Blue
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White

2000 Chevrolet Impala Car Stereo Radio Wiring Diagram
Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Antenna Trigger: White
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
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

Car Radio Constant 12v+ Wire: Blue/Yellow
Car Radio Switched 12v+ Wire: Gray
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Green
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: 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 (+): Pink
Left Front Speaker Negative Wire (-): Violet
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Blue
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Red
Right Rear Speaker Negative Wire (-): White

this is what I show for Passat.
Car Radio Constant 12V+ Wire: Red/White
Car Radio Ignition Switched 12V+ Wire: Orange
Car Radio Ground Wire: Brown
Car Stereo Illumination Wire: Gray/Blue
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amplifier Trigger Wire: N/A
Front Speakers Size: 6 1/2′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Blue/Black
Left Front Speaker Wire (-): Orange/Black
Right Front Speaker Wire (+): Red/White
Right Front Speaker Wire (-): Orange/White
Rear Speakers Size: 6 1/2′
Rear Speakers Location: Rear Door
Left Rear Speaker Wire (+): Red/Light Green
Left Rear Speaker Wire (-): Orange/Black
Right Rear Speaker Wire (+): Blue/Light Green
Right Rear Speaker Wire (-): Orange/Red

Here are the radio wire colors of the whole system, please rate this solution.

2007 Pontiac G6 Car Radio Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Red/White
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox for switched power or use the brown wire (+) at the ignition wire harness.
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Pink
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: 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 (+): 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

RADIO 12Vwhite |+ |radio
RADIO GROUND black |- |radio
RADIO SWITCH|white/black |+ |radio RADIO ILLUMINATE|red/yellow |+ |radio LF SPEAKER|brn/blk - brn/wht
RF SPEAKER|orange - org/blu LR SPEAKER|lt grn - lt grn/blk
RR SPEAKER|gray - gry/blk

Here is the color code chart for your 1989 Corolla: Radio Constant 12V+ Wire: Blue/Yellow
Radio Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Wire: Green
Radio Dimmer Wire: N/A
Radio Antenna Trigger Wire: N/A
Radio Amp Trigger Wire: N/A
Front Speakers Size: 4′
Front Speakers Location: Dash
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Purple
Right Front Speaker Wire (-): Light Green
Rear Speakers Size: 4′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White I hope this is what you need. Please take a few seconds to rate how helpful this post was to you. Thank you and good luck! billyho1977@FixYa

Here is a wiring diagram of the radio by wire color:

Radio Constant 12V+ Wire: Green/Yellow
Radio Switched 12V+ Wire: Yellow/Black
Radio Ground Wire: Black/Green
Radio Illumination Wire: Light Blue/Red
Radio Dimmer Wire: n/a
Radio Antenna Trigger Wire: Blue
Radio Amp Trigger Wire: Blue (Same as Antenna Trigger)
Front Speakers Size and Location: 5′ x 7′ Doors
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 (-): Dark Green/Orange
Rear Speakers SIze and Location: 5′ x 7′ Rear Deck
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
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