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You will need a shop manual/wiring diagram to be sure, but it is USUALLY a red wire. However, there are always two - one always connected for radio memory, clock, etc., and one that come on with the ignition.
Get an electrical meter and you can figure it out yourself. Check all the wires (with the black meter wire connected to a ground), one by one. You will find one wire will have 12+ volts continuously, and one that gets voltage only when the key is turned to the "accessory" (first position) or further (like to start). Then, you will have your answer.

13 years ago. Rating: 0
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