Automotive Wiring Colors | It Still Runs Automotive Wiring Colors by Brandi Brown . power wiring image by Aleksandr Ugorenkov from Fotolia. Despite popular belief, there are no standard wiring colors for each wire in a car. The specifics of the wire coloring are dependent on the make, model and even year of the specific vehicle under consideration. Car Stereo Wire Colors- Detailed Chart by Stereo Authority Understanding car stereo wire colors are essential if you are adding a new car stereo by yourself. You do not want to end up screwing the entire electric setup. Now all these different color represent something and it should be added or placed at the required port. How to Identify Aftermarket Car Stereo Wire Colors Standard Aftermarket Car Stereo Head Unit Wire Colors Lifewire / Nusha Ashjaee Although there are exceptions to every rule, most aftermarket car stereos use a standardized coloring scheme for the power, ground, antenna , and speaker wires.