Car Stereo ISO Wiring Lead Colours

The majority of new car stereos now come with the industry standard ISO connector.

The colours on the lead are usually as follows;

Power plug

Yellow - Permanant power

Red - Switched power

Orange - Illumination

Blue - Remote (electric aerial/amplifier switch on)

Black - Earth

Speaker plug

Grey - Front right speaker

White - Front left speaker

Purple - Rear right speaker

Green - Rear left speaker

These wires are in pairs. The speaker wires with the tracers are usually the returns.

It is important to bear in mind that these can vary slightly according to manufacturer so always consult the stereo's manual.

These colours do not apply to the standard wires in the car.

We keep a full range of ISO adaptor leads to avoid having to cut off the original plug in the car. In cases where the original wiring has been altered we would always advise taking the car to a professional auto electrician.