It doesn't really matter which colour you use for positive as long as you use the same colour for every speaker.If not your speakers will be out of phase.
1998 Toyota Tacoma Stereo Wiring InformationRadio Battery Constant 12v+ Wire: Blue/YellowRadio Accessory Switched 12v+ Wire: GrayRadio Ground Wire: BrownRadio Illumination Wire: GreenLeft Front Speaker Positive Wire (+): PinkLeft Front Speaker Negative Wire (-): PurpleRight Front Speaker Positive Wire (+): GreenRight Front Speaker Negative Wire (-): BlueLeft Rear Speaker Positive Wire (+): BlackLeft Rear Speaker Negative Wire (-): YellowRight Rear Speaker Positive Wire (+): RedRight Rear Speaker Negative Wire (-): White
Go here bud, I neede to know this too so I googled it.http://www.modifiedlife.com/1996-mazda-protege-car-stereo-wiring-diagram/I found the pinout at http://www.installdr.com to be extremely helpful.The wire coloring (wiring diagram) for my 1997 Mazda Protege LX was as follows:Car Radio Battery Constant 12v+ Wire: Blue/RedCar Radio Accessory Switched 12v+ Wire: Pink/BlackCar Radio Ground Wire: Black/YellowLeft Front Speaker Positive Wire (+): Blue/OrangeLeft Front Speaker Negative Wire (-): Violet/WhiteRight Front Speaker Positive Wire (+): White/RedRight Front Speaker Negative Wire (-): Yellow/RedLeft Rear Speaker Positive Wire (+): OrangeLeft Rear Speaker Negative Wire (-): YellowRight Rear Speaker Positive Wire (+): Green/BlackRight Rear Speaker Negative Wire (-): Green/Orange
I found the pinout at http://www.installdr.com to be extremely helpful.The wire coloring (wiring diagram) for my 1997 Mazda Protege LX was as follows:Car Radio Battery Constant 12v+ Wire: Blue/RedCar Radio Accessory Switched 12v+ Wire: Pink/BlackCar Radio Ground Wire: Black/YellowLeft Front Speaker Positive Wire (+): Blue/OrangeLeft Front Speaker Negative Wire (-): Violet/WhiteRight Front Speaker Positive Wire (+): White/RedRight Front Speaker Negative Wire (-): Yellow/RedLeft Rear Speaker Positive Wire (+): OrangeLeft Rear Speaker Negative Wire (-): YellowRight Rear Speaker Positive Wire (+): Green/BlackRight Rear Speaker Negative Wire (-): Green/Orange
I found the pinout at http://www.installdr.com to be extremely helpful.The wire coloring (wiring diagram) for my 1997 Mazda Protege LX was as follows:Car Radio Battery Constant 12v+ Wire: Blue/RedCar Radio Accessory Switched 12v+ Wire: Pink/BlackCar Radio Ground Wire: Black/YellowLeft Front Speaker Positive Wire (+): Blue/OrangeLeft Front Speaker Negative Wire (-): Violet/WhiteRight Front Speaker Positive Wire (+): White/RedRight Front Speaker Negative Wire (-): Yellow/RedLeft Rear Speaker Positive Wire (+): OrangeLeft Rear Speaker Negative Wire (-): YellowRight Rear Speaker Positive Wire (+): Green/BlackRight Rear Speaker Negative Wire (-): Green/Orange
I found the pinout at http://www.installdr.com to be extremely helpful.The wire coloring (wiring diagram) for my 1997 Mazda Protege LX was as follows:Car Radio Battery Constant 12v+ Wire: Blue/RedCar Radio Accessory Switched 12v+ Wire: Pink/BlackCar Radio Ground Wire: Black/YellowLeft Front Speaker Positive Wire (+): Blue/OrangeLeft Front Speaker Negative Wire (-): Violet/WhiteRight Front Speaker Positive Wire (+): White/RedRight Front Speaker Negative Wire (-): Yellow/RedLeft Rear Speaker Positive Wire (+): OrangeLeft Rear Speaker Negative Wire (-): YellowRight Rear Speaker Positive Wire (+): Green/BlackRight Rear Speaker Negative Wire (-): Green/Orange
GMC Sonoma Radio Wiring GuideCar Radio Battery Constant 12v+ Wire: OrangeCar Radio Accessory Switched 12v+ Wire: YellowCar Radio Ground Wire: BlackCar Radio Illumination Wire: GrayCar Stereo Dimmer Wire: BrownLeft Front Speaker Positive Wire (+): TanLeft Front Speaker Negative Wire (-): GrayRight Front Speaker Positive Wire (+): Light GreenRight Front Speaker Negative Wire (-): Dark GreenLeft Rear Speaker Positive Wire (+): BrownLeft Rear Speaker Negative Wire (-): YellowRight Rear Speaker Positive Wire (+): Dark BlueRight Rear Speaker Negative Wire (-): Light Blue
2005 Chevrolet Malibu Stereo Wiring Information Radio Battery Constant 12v+ Wire: Red/White Radio Ground Wire: Black/White or Black Stereo Antenna Trigger Wire: Pink 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
left front speaker wire brown is positive.
The car stereo wiring colors for a 1988 Cadillac El Dorado with Bose are gray for right front speaker positive. Light green for right front speaker negative. Dark green for audio rear speaker positive and brown for rear speaker negative.
Wiring diagram for 96 Mazda b2300
1988 Ford F150 Truck Stereo Wiring InformationRadio Battery Constant 12v+ Wire:Green/YellowRadio Accessory Switched 12v+ Wire:Yellow/BlackRadio Ground Wire: Red or BlackRadio Illumination Wire: Blue/RedLeft Front Speaker Positive Wire (+):Orange/GreenLeft Front Speaker Negative Wire (-):Black/WhiteRight Front Speaker Positive Wire (+):White/GreenRight Front Speaker Negative Wire (-):Black/WhiteLeft Rear Speaker Positive Wire (+):Pink/GreenLeft Rear Speaker Negative Wire (-):Pink/BlueRight Rear Speaker Positive Wire (+):Pink/BlueRight Rear Speaker Negative Wire (-):Green/Orange1988 Ford F150 Truck Speaker SizesAudio Front Speakers Size: 6″ Audio Rear Speakers Size: 6″ x 9″ Speakers
You can buy a speaker harness. An adapter that connect the positive and negative from the speaker into the stock harness.