Manufacturers have made connecting a car stereo to an wiring harness relatively easy with color coded wires. In the table below, we show what those wires do and what the colors mean.
The right-front speaker wires are gray, left-front speakers are white, right-rear speakers are purple, and left-rear speakers are green. Ground wires are black, antenna wires are blue, and amplifier wires are blue with a white stripe.
What is key 1 and key 2 wires for?
These radios’ SWC wires are often identified as KEY 1 and KEY 2, or SW 1 and SW 2. This enables you to connect your Panasonic, Android radio, or another radio brand to our PAC interface to retain steering wheel controls with the radio without having to modify our 3.5mm connector.
What do I connect the orange illumination wire to?
Are radio wires color coded? – Related Questions
What do you do with orange wire?
Red or orange wires are often used to provide the secondary phase voltage in a 220-volt application. Always assume that a red or orange wire (in addition to the black wire, which provides the primary phase voltage) is live.
What are the colors on the radio wiring?
Car Stereo Wiring Diagram / Wire Color Guide
Color
Type
Description
Yellow
Power
12V Constant Power to Keep Memory Alive (Independent of Key Position)
Black
Power
Chassis Ground
Blue
Power / Antenna
Antenna Power
Blue / White Stripe
Power / Amplifier
Amplifier Turn ON
What is orange wire on trailer lights?
Typically on a trailer with a 9-way installed the circuit with an orange wire is Reefer (tag) or Stop.
What do I connect the dimmer wire to?
With conventional dimmer wiring using NM cable, a NM cable supplies line voltage from the electrical panel to the dimmer outlet box. Another NM cable connects from this dimmer box to the light fixture box.
Do I need to hook up power antenna wire?
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.
What do I connect the REM wire to?
Some of the more common options for connecting the remote turn on wire when using a factory head unit are to the wire connected to a power antenna (older vehicles which do not turn off the antenna when not using the radio) or to the vehicle’s fuse box.
Where do you connect the live wire?
Fuse is always connected to a live wire. If fuse wire is connected to neutral wire instead of live wire then even when the fuse burns out the appliance remains connected to the live wire and the current supplied will not be disrupted due to overloading. Was this answer helpful?
Which wire is the memory wire on a radio?
When you find one that shows approximately 12V, you have found the constant 12V wire, also known as the memory wire. It’s yellow in most aftermarket head units.
What is reverse input wire?
The reverse trigger wire is providing a signal to your head unit to indicate that the vehicle has been shifted into reverse. In the previous section, we made this connection to the back of the vehicle’s head unit. We must now connect the wire to the proper signal on the vehicle’s wiring harness.
What happens if live and neutral wires reversed?
If for some reason the live and neutral conductor wires are reversed then a ‘reverse polarity’ condition is produced.
Is back wire positive or negative?
In the world of DC electronics, the accepted wiring convention is that the red wire carries the positive voltage, and the black is circuit ground. Usually the red is marked as + (plus) and the black is marked as – (minus).
How do you tap into a reverse wire?
What happens if you flip hot and neutral wires?
With reverse polarity, the hot wire feeds electricity into the socket and you’ll get zapped if you touch it. Inexpensive circuit analyzers will let you know whether an outlet is wired correctly. The lights on these testers will indicate whether the hot and neutral wires are reversed.
Where do you connect the reverse input wire?
What color is the reverse trigger wire?
The red wire passes the reverse signal up to the front of the car. The camera end has a red and black wire which the red wire gets connected to the reverse light and the black gets connected to ground.
