The Cadillac CTS was introduced in 2003, and the 2004 model year was the first to feature a factory-installed radio. If you need to replace or upgrade the radio in a 2004 Cadillac CTS, you’ll need to know the wiring diagram to connect everything properly. In this article, we’ll provide a detailed guide to the 2004 Cadillac CTS radio wiring diagram, including frequently asked questions and tables that will help you get the job done right.
Wiring Diagram
The 2004 Cadillac CTS radio wiring diagram is shown below:
| Wire Color | Function | Location |
|---|---|---|
| Yellow | 12V Constant | Radio Harness |
| Orange | Accessory Switched 12V | Radio Harness |
| Black/White | Ground | Radio Harness |
| Light Blue/Red | Amplifier Remote | Radio Harness |
| Dark Green | Left Front Speaker Positive | Radio Harness |
| Tan | Left Front Speaker Negative | Radio Harness |
| Gray | Right Front Speaker Positive | Radio Harness |
| Light Gray | Right Front Speaker Negative | Radio Harness |
| Dark Blue | Left Rear Speaker Positive | Radio Harness |
| Light Blue | Left Rear Speaker Negative | Radio Harness |
| Brown | Right Rear Speaker Positive | Radio Harness |
| Yellow | Right Rear Speaker Negative | Radio Harness |
The wiring diagram above shows the wire color, function, and location for each wire in the 2004 Cadillac CTS radio harness. Use this diagram to connect your new radio properly and ensure that it functions correctly.
FAQ
What is the purpose of the yellow wire?
The yellow wire is the 12V constant wire. This wire provides power to the radio even when the ignition is off. It is used to keep the radio presets and clock settings when the car is turned off.
What is the purpose of the orange wire?
The orange wire is the accessory switched 12V wire. This wire provides power to the radio only when the ignition is on. It is used to turn the radio on and off with the car.
What is the purpose of the black/white wire?
The black/white wire is the ground wire. It provides a path for electrical current to return to the battery and complete the circuit.
What is the purpose of the light blue/red wire?
The light blue/red wire is the amplifier remote wire. It is used to turn on an external amplifier that is connected to the radio.
What is the purpose of the speaker wires?
The speaker wires are used to connect the radio to the car’s speakers. Each pair of wires (dark green and tan, gray and light gray, dark blue and light blue, brown and yellow) is connected to a different speaker.
Conclusion
The 2004 Cadillac CTS radio wiring diagram is an essential tool if you are planning to replace or upgrade your radio. Make sure to follow the wiring diagram carefully to ensure that your new radio functions correctly. If you have any questions or problems, refer to the FAQ or consult a professional installer.
