Car Stereo Radio Power Wiring Guide

Car Stereo Wiring Guide

Warning: Disconnect the negative terminal of the battery before beginning any installation

Wire Color	Polarity	Function
Yellow	+	Constant 12 volt power source regardless of key position.
Red	+	Accessory 12 volt power source requires turning of the key position.
Ground	-	Chassis ground.
Orange	+	Illumination wire, provides 0 volts when lights are off and 12 volts when the vehicle exterior lights are on.
Orange / White stripe	+	Dimmer wire, provides 0 - 12 volts from the vehicle and is adjustable with interior light dimmer control.
Blue	+	Power antenna, provides 12 volts from the receiver when the FM or AM radio is being used. Turns off on any other source.
Blue / White stripe	+	Amplifier turn on, provides 12 volts from the receiver when receiver is turned on.
Brown	+	Audio Mute (Not common and not used in most applications).
Light Green	-	Parking brake, vehicle provides a ground signal when parking brake is pulled up.
Light Violet	+	Reverse trigger (+12 volts when vehicle is placed in reverse)
Pink	+	V.S.S. - Vehicle speed sense (PWM signal / square wave)