When it comes to installing a car stereo, having a wiring diagram is essential. The 7018b is a popular model, and having a proper understanding of its wiring can help you install it seamlessly. In this article, we will discuss the 7018b wiring diagram in detail.
What is a Wiring Diagram?
A wiring diagram is a graphical representation of an electrical circuit. It shows how different electrical components are connected, and how they work together to make the circuit function. By looking at a wiring diagram, you can understand how the components are wired and where exactly they are placed.
Why do you need a Wiring Diagram?
Installing a car stereo can be a daunting task, especially if you don’t have the right tools or knowledge. A wiring diagram can make the process a lot easier. By providing you with the right information, you can avoid mistakes, save time, and ensure that your stereo functions correctly.
The 7018b Wiring Diagram
The 7018b is a double-din car stereo that comes with various features, including Bluetooth and GPS navigation. The wiring diagram consists of multiple wires that need to be connected properly for the stereo to function correctly. In this section, we will discuss the different wires and their functions.
The Power Wires
The power wires are essential for the stereo to function. There are three power wires, including:
| Wire Color | Function |
|---|---|
| Yellow | Constant 12V |
| Red | Switched 12V |
| Black | Ground |
The yellow wire is connected to a constant 12V source, which provides power to the memory and other components of the stereo. The red wire is connected to a switched 12V source, which turns on the stereo when the ignition is on. The black wire is connected to a ground source, which completes the circuit.
The Speaker Wires
The speaker wires are responsible for transmitting audio signals from the stereo to the speakers. There are eight speaker wires, including:
| Wire Color | Function |
|---|---|
| White | Front left speaker positive |
| White with black stripe | Front left speaker negative |
| Gray | Front right speaker positive |
| Gray with black stripe | Front right speaker negative |
| Green | Rear left speaker positive |
| Green with black stripe | Rear left speaker negative |
| Purple | Rear right speaker positive |
| Purple with black stripe | Rear right speaker negative |
The speaker wires are color-coded for convenience, and each wire has a positive and negative polarity. It is recommended that you follow the color-coding to ensure that the audio signals are transmitted correctly.
The Input Wires
The input wires are responsible for connecting external devices to the stereo. There are multiple input wires, including:
| Wire Color | Function |
|---|---|
| Yellow with black stripe | Video input |
| Green with black stripe | Rear camera input |
| White with black stripe | Left audio input |
| Red with black stripe | Right audio input |
The yellow wire is used for connecting external video devices, such as DVD players or gaming consoles. The green wire is used for connecting a rear-view camera. The white and red wires are used for connecting audio devices.
The Control Wires
The control wires are responsible for controlling different functions of the stereo. There are multiple control wires, including:
| Wire Color | Function |
|---|---|
| Orange | Dimmer control |
| Light green | Parking brake control |
| Blue with white stripe | Amplifier remote turn-on |
The orange wire is used to dim the stereo display when the headlights are turned on. The light green wire is used to disable the video display when the parking brake is not engaged. The blue with white stripe wire is used to turn on a separate amplifier.
Frequently Asked Questions (FAQ)
1. Why is my 7018b stereo not turning on?
If your 7018b stereo is not turning on, it could be due to a faulty power connection. Check the yellow, red, and black wires to ensure that they are connected properly. If the connections are correct, check the fuses to ensure that they are not blown.
2. How do I connect my rear-view camera to the 7018b stereo?
To connect a rear-view camera to the 7018b stereo, connect the green wire from the stereo to the camera’s video input. Connect the camera’s power and ground wires to a separate power source, such as the reverse lights.
3. How do I adjust the stereo’s display brightness?
To adjust the stereo’s display brightness, connect the orange wire to a dimmer switch. When the headlights are turned on, the dimmer switch will reduce the display’s brightness.
4. Can I connect an external amplifier to the 7018b stereo?
Yes, you can connect an external amplifier to the 7018b stereo. Connect the blue with white stripe wire to the amplifier’s remote turn-on input. This will turn on the amplifier whenever the stereo is turned on.
5. How do I reset the 7018b stereo?
To reset the 7018b stereo, locate the small pinhole on the front of the unit. Insert a small object, such as a paperclip, into the hole and hold it for a few seconds. This will reset the stereo to its factory settings.
Conclusion
The 7018b wiring diagram is fundamental in installing and troubleshooting issues with the stereo. By following the diagram correctly, you can avoid making mistakes and ensure that the stereo functions correctly. As always, follow safety procedures when working with electrical circuits, and consult a professional if you are uncertain about any step.
