Speaker Wire Automotive Wire Color Code Chart. Most aftermarket head units usually use an orange wire or an orange wire with a white stripe for this. 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. On factory car stereo.
If only one wire ever had power in this step it is the accessory wire. Home stereo and car speakers normally often use a red or plus sign to indicate the polarity for the speaker wiring terminals which you connect your wiring to. This represents constant 12v. Car stereo wire colors.
The wire that still shows 12v is the accessory wire which is usually red in aftermarket wiring harnesses.
If only one wire ever had power in this step it is the accessory wire. These are some of the main standard colors. Corvette only with second one wire black connector. The wire that still shows 12v is the accessory wire which is usually red in aftermarket wiring harnesses. 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.