The installation of an aftermarket head unit in a car can be a daunting task, especially when it comes to wiring. However, with the right wiring diagram, the process can be much easier. In this article, we will be discussing the wiring diagram for aftermarket head units and providing some frequently asked questions to help make the process easier.
What is an Aftermarket Head Unit?
An aftermarket head unit, also known as an aftermarket stereo, is a replacement car stereo unit that is installed after the original factory-installed unit has been removed. These units can offer additional features such as Bluetooth connectivity, USB ports, and navigation systems that are not offered in the factory-installed units.
However, the installation of an aftermarket head unit can be tricky, especially when it comes to wiring. The wiring diagram for these units is essential to ensure that the installation is done correctly.
What is a Wiring Diagram?
A wiring diagram is a visual representation of the electrical connections and functions of a specific circuit. It shows how the electrical wires are interconnected and can be used to diagnose problems or guide the installation of electrical equipment.
In the case of aftermarket head units, the wiring diagram shows how to connect the wires from the head unit to the car’s electrical system. This ensures that the head unit is receiving power and that the speakers are connected correctly.
Aftermarket Head Unit Wiring Diagram
Below is a wiring diagram for an aftermarket head unit. This diagram is a general guide and may not apply to every make and model of car. However, it should give you an idea of what to expect when installing an aftermarket head unit.
| Wire Color | Function |
|---|---|
| Yellow | Battery |
| Red | Ignition |
| Black | Ground |
| Blue/White | Amplifier Remote |
| Orange/White | Illumination |
| Green/Black | Left Rear Speaker Positive |
| Purple/Black | Right Rear Speaker Positive |
| Green | Left Front Speaker Positive |
| Purple | Right Front Speaker Positive |
| Gray | Left Front Speaker Negative |
| White | Left Rear Speaker Negative |
| Green | Right Front Speaker Negative |
| White | Right Rear Speaker Negative |
Yellow Wire
The yellow wire is connected to the battery of the car. This provides a constant source of power to the head unit, allowing it to retain its memory and settings even when the car is turned off.
It is important to ensure that the yellow wire is connected to the correct source of power in the car to avoid draining the battery.
Red Wire
The red wire is connected to the ignition of the car. This provides a switched source of power that turns on the head unit when the car is turned on.
It is important to ensure that the red wire is connected to the correct source of power in the car to avoid draining the battery.
Black Wire
The black wire is connected to the ground of the car. This provides a path for the electrical current to return to the battery.
It is important to ensure that the black wire is connected to a clean and secure ground to avoid electrical interference and damage to the head unit.
Blue/White Wire
The blue/white wire is connected to the amplifier remote of the car. This turns on any external amplifiers that may be connected to the head unit.
It is important to ensure that the blue/white wire is connected to the correct source of power in the car to avoid damaging the head unit and any external amplifiers.
Orange/White Wire
The orange/white wire is connected to the illumination of the car. This dims the display of the head unit when the car headlights are turned on.
It is important to ensure that the orange/white wire is connected to the correct source of power in the car to avoid damage to the head unit and ensure proper display.
Frequently Asked Questions
What tools do I need to install an aftermarket head unit?
You will need a set of screwdrivers, wire strippers, crimpers, and electrical tape. You may also need a wiring harness adapter and a dash kit to fit the head unit into the car’s dashboard.
How long does it take to install an aftermarket head unit?
The installation time can vary depending on the make and model of the car and the complexity of the installation. However, it can take anywhere from 1-4 hours to complete.
Can I install an aftermarket head unit myself?
Yes, you can install an aftermarket head unit yourself. However, it is important to ensure that you have a wiring diagram and the proper tools to complete the installation correctly.
Will installing an aftermarket head unit void my car’s warranty?
Installing an aftermarket head unit will not necessarily void your car’s warranty. However, if any damage is caused during the installation process, it may not be covered by the warranty. It is important to ensure that the installation is done correctly to avoid any potential issues.
What should I do if I am having trouble with the installation?
If you are having trouble with the installation, it may be best to seek the help of a professional installer. They will have the knowledge and expertise to ensure that the installation is done correctly and without any potential issues.
Conclusion
The wiring diagram for an aftermarket head unit is essential to ensure that the installation is done correctly. By following the diagram and understanding the function of each wire, you can install the head unit with confidence. If you are unsure about any part of the installation, it is important to seek the help of a professional installer.
