To find color codes for stereo wiring, visit Carstereo.com, Sonix Electronix or Installdr.com. You need to know the specific brand and model of your stereo system. Its manual also can come in handy when wiring your system.
Typically, there is a standard color code that is acceptable by most aftermarket stereo systems. If there are different colors in your harness other than this standard, contact a dealer or the manufacturer for help. Attempting uncertain connections can result in damaging components and voiding warranties. Installdr.com allows visitors to download installation and wiring guides for different brands. The guides provide connection instructions for power wires, which are red, black and blue, and speaker wires, which are gray, green, white and purple.