How to wire aftermarket radio

How do you hook up car radio wires?

The power wire coming from the stereo is usually red, and likely will connect to a red wire from the car. The ground wire for the stereo will be black, as will its corresponding wire from the car. If there is no ground wire, you can secure the ground cable to bare metal in the body of the car to serve as a ground.

What color wires go together in a car stereo?

General Wiring Codes

Red and yellow wires provide constant and switched power, respectively. Black is the ground wire, while blue is accessory power. The latter is used to activate amplifiers, equalizers and other accessories that need to turn on with the radio.

Do I need an antenna adapter for my aftermarket stereo?

Yes, you will need that adapter. Don’t forget to connect the blue antenna or remote wire to the blue adapter lead.

What color is the constant 12v wire?


Where does the yellow wire go on a car stereo?

The stereo wire colors include blue, white, purple, grey and orange. The red wire is for the 12 volt ignition, which can be attached to the stereo. The yellow wire is the 12 volt battery wire, which should also be attached to the stereo for power. The final wire, the black wire, is the ground wire.

What is the blue wire for on a car stereo?

One thing to note, most head unit wiring harnesses also have a solid blue wire. This wire is typically for power antenna or factory amplifier turn on, do not get this wire confused with the remote turn on wire with the blue/white stripe.

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Where does the orange wire go on a car stereo?

Gray, green, white and purple wires are usually front and rear speaker wires, respectively. The matching wires in these pairs featuring a black stripe are the negative leads. The orange lead is the illumination wire, coordinating the radio’s display intensity with the rest of your dash lights.

What is the orange and white wire for on a car stereo?

The normal use of orange and orange/white wires is orange is for variable voltage to control display illumination dimming (i.e. the head unit display dims along with the other dash lights) while orange/white is a simple on/off signal of whether the dash lights are on (the head unit has only bright and dim display …

What is a car radio accessory switched 12v wire?

When you find one that shows approximately 12V, you have found the constant 12V wire, which is also referred to as the memory wire. Most aftermarket head units will use a yellow wire for this. … The wire that still shows 12V is the accessory wire, which is usually red in aftermarket wiring harnesses.

What color speaker wires go together?

Speaker Wire Color CodesSpeakerTerminalWire ColorLeftNegative (-)BlackLeftPositive (+)RedRightNegative (-)GreenRightPositive (+)White or Yellow

Do I need to hook up power antenna wire?

2 Answers. Yes, these two wires should be connected together. This is what allows the radio to retract the antenna when it isn’t being used. Just because your wiring harness has a connection for this wire, it doesn’t necessarily mean that your car has this kind of motorized antenna.

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What is the blue wire on antenna adapter?

The Blue wire from the powered antenna harness should be connected to the remote turn on/power antenna/amp turn on lead of the new head unit, it will sufficiently power the antenna booster; IF you don’t have one of these connections, splice into the 12 volt switch on the ignition not the 12 volt constant/memory.

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