Am replacing radio in 1990 Holden/Isuzu Jackaroo. Current loom has following coding - red & red/white; blue & blue/white or blue/pale blue; red/grey; green/blue & white; brown & brown/white; green/green & red. What do these serve as colours different from new radio. Barry

With solder joints

its easier to try an get a multi plug so you just connect them

The engine may have a intake vacuum leak. A defective O2 sensor has no effect on engine idle or performance.

Hope this helps... 1990 Ford F350 Factory 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: 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 (+): 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: N/A
Car Audio Rear Speakers Location: N/A
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

Remember to rate this.

1990 Mazda B2000 B-Series Pickup Car Stereo Radio Wiring Diagram.
Car Radio Constant 12V+ Wire: Blue/Red
Car Radio Switched 12V+ Wire: Red/Black
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Blue/White
Car Radio Dimmer Wire: N/A
Car Radio Antenna Trigger N/A
Car Radio Amp Trigger Wire: N/A
Front Speakers Size: 4′
Front Speakers Location: Dash
Left Front Speaker Wire (+): Blue/Red
Left Front Speaker Wire (-): Blue/Yellow
Right Front Speaker Wire (+): Blue
Right Front Speaker Wire (-): Blue/White
Rear Speakers Size: 4′
Rear Speakers Location: Rear Corners
Left Rear Speaker Wire (+): Blue/Red
Left Rear Speaker Wire (-): Blue/Green
Right Rear Speaker Wire (+): Blue/White
Right Rear Speaker Wire (-): Blue/Green

pls rate

unbolt gearbox, take out change clutch plate put the new one back in, rebolt the gear box back on

Car Radio Battery Constant 12v+ Wire: Red/White
Car Radio Accessory Switched 12v+ Wire: Red/Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Green
Car Stereo Dimmer Wire: Red/Yellow
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: 5 1/4′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Blue
Left Front Speaker Negative Wire (-): Yellow
Right Front Speaker Positive Wire (+): Green
Right Front Speaker Negative Wire (-): Gray
Car Audio Rear Speakers Size: 4′
Car Audio Rear Speakers Location: Roof Mount
Left Rear Speaker Positive Wire (+): Orange
Left Rear Speaker Negative Wire (-): White
Right Rear Speaker Positive Wire (+): Orange/Blue
Right Rear Speaker Negative Wire (-): Orange/White

should be the one

I would say yes if you managed to find an alternator with the following:
1. same bolt pattern to mount the alternator
2. same pulley size
3. same pulley resistance
4. same output current

1990 Mazda 626 Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Blue/Red
Car Radio Accessory Switched 12v+ Wire: Blue/White
Car Radio Ground Wire: N/A
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: 4′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Blue
Left Front Speaker Negative Wire (-): Blue/White
Right Front Speaker Positive Wire (+): Blue/Red
Right Front Speaker Negative Wire (-): Blue/Yellow
Car Audio Rear Speakers Size: 6 1/2′
Car Audio Rear Speakers Location: Side Shelves
Left Rear Speaker Positive Wire (+): Blue/Red
Left Rear Speaker Negative Wire (-): Blue/Green
Right Rear Speaker Positive Wire (+): Blue/White
Right Rear Speaker Negative Wire (-): Blue/Green