Car Wiring Color Codes

Although there are exceptions to every rule most aftermarket car stereos use a standardized coloring scheme for the power ground antenna and speaker wires. Important there are two 2 yellow two 2 gray and two 2 brown wires in this harness. Label it or splice to constant wire on aftermarket stereo first.

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The Above Picture Shows The Wiring Color Code For A Cea

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For example a wire marked gr would be green with a red stripe.

Car wiring color codes. If you have the pigtail that came with your aftermarket head unit and it uses the standard colors then the wires will have the following purposes and colors. The first letter is the main color of the wire and the second letter represents the striping. Wiring colour code table. Touch for a very short period of time one wire to the positive side of a 15 volt battery any size and the other wire to the negative side.

Main battery feed to double pole ignition switch. Locate the 12 volt constant wire first. Another way that diagrams include the wire color is by using a two letter code. To check speakers use test radio.

Brownpurple alternator regulator feed. Oem car radio wire colors vary widely from one car stereo to the next but its actually pretty easy to identify what each one is for. To check hot ignition lights dimmer use a test light or voltmeter. Many british designed vehicles use colour coded cables to assist in identifying the various circuits in use.

This is an extract from bs au7a 1983 colour code for vehicle wiring from the british standards institution 2 park st london w1a 2bs. Note that these colour codes may not apply directly to older cars. To check speaker polarity assuming you dont have a polarity tester. Commonly used colour codes for british car wiring colour maintracer use brown main battery feed brownblue control box to ignition and lighting switch feed brownred compression ignition starting aid to switch.

Brands like pioneer alpine sony kenwood jvc boss and jensen. Swapping yellow wires will cause damage to any aftermarket stereo. Car stereo wiring color codes the picture below shows the wiring color codes for a cea aftermarket radio harness that is included with most radios.