BMW - Dodge/Chrysler - Ford - GM - Honda/Acura - Isuzu - Jeep - Mazda - Mercedes - Mitsubishi - Nissan - Saab - Subaru - Toyota - Volvo - VW

*Note Well*
Use this information at your own risk!

We've done our best to provide the most up to date information, but manufacturers constantly change their codes, with the result that there may be inconsistencies. Wire colors in your car might be different from the colors described here. Use the given colors for reference purposes only. Always test wires to make sure they are correct. We are not responsible for any misprints.

* To check hot wires, ignition, lights, or dimmer, use a voltmeter.

* To check speakers, use a portable test radio.

* To check speaker polarity (assuming you don't have a polarity tester): Touch (for a very short period of time) one wire to the positive side of a 1.5-volt battery (AA or C size), and the other wire to the negative side. If speaker "pops out", then polarity is correct. If speaker "pops in" then polarity is reversed. Use a meter to make sure that the wires you are going to check for speakers do not have any power.