Where can you find a radio wiring harness diagram for a 2002 Ford Focus zx3?

Answer 1

Courtesy of LiquidGrayZX5

Pin --- Color --- Stripe --- Function

Harness 1

1 --- White --- Black --- Left front +

2 --- Gray --- Black --- Left front -

3 --- White --- Purple --- Left rear +

4 --- Gray --- White --- Left rear -

5 --- White --- Red --- Right front +

6 --- Gray --- Red --- Right front -

7 --- White --- (none) --- Right rear +

8 --- Gray --- (none) --- Right rear -

Harness 2

1 --- (not used)

2 --- Black --- Green --- Radio Ground

3 --- (not used)

4 --- Orange (thin) --- Black --- Radio Illumination

5 --- Green --- Yellow --- Radio switch

6 --- Black --- Yellow --- Radio Ground

7 --- Orange (thick) --- Black --- Radio 12V

Harness 3

1 --- White --- Green --- Speed sensor

2 --- (not used)

3 --- (not used)

4 --- (not used)

5 --- (not used)

6 --- (not used)

The speed sensor wire is for the Speed controlled volume feature of these radios. I have no earthly idea why there are two different ground wires (black/green, black/yellow), but that is the way it is.

001 Ford Focus Car Stereo Wiring Diagram

Car Radio Battery Constant 12v+ Wire: Green/Black

Car Radio Accessory Switched 12v+ Wire: Black/Pink

Car Radio Ground Wire: Black/Green

Car Radio Illumination Wire: Orange/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 (+): Orange/Green

Left Front Speaker Negative Wire (-): Blue/White

Right Front Speaker Positive Wire (+): Tan/Green

Right Front Speaker Negative Wire (-): Green/Orange

Car Audio Rear Speakers Size: N/A

Car Audio Rear Speakers Location: N/A

Left Rear Speaker Positive Wire (+): Gray/Blue

Left Rear Speaker Negative Wire (-): Brown/Yellow

Right Rear Speaker Positive Wire (+): Black/Violet

Right Rear Speaker Negative Wire (-): Orange/Violet