A wiring harness is an essential component in any vehicle, as it ensures that various electrical devices and systems function properly. The wiring harness consists of a network of interconnected wires, connectors, and terminals that transmit electrical signals throughout the vehicle. One of the most versatile and popular wiring harnesses on the market is the 21 circuit universal wiring harness, which can be used for a wide range of applications. In this article, we’ll explore the diagram for the 21 circuit universal wiring harness, its features, and how to install it.
Features of the 21 Circuit Universal Wiring Harness
The 21 circuit universal wiring harness is designed to provide a reliable and robust electrical connection between various electrical devices and systems in a vehicle. Here are some of its key features:
Multiple Circuits
The 21 circuit universal wiring harness consists of 21 separate circuits that provide power to various electrical devices in the vehicle. These circuits include power windows, power locks, headlights, tail lights, turn signals, brake lights, and many others. Each circuit is clearly labeled and color-coded, making it easy to identify and troubleshoot any issues that may arise.
Fuse Box
The 21 circuit universal wiring harness comes with a fuse box that protects the electrical system from overloading or short circuits. The fuse box contains 18 fuses and 21 circuits, with each circuit having its own fuse. The fuses are easily replaceable, making it easy to maintain the electrical system.
Relays
The 21 circuit universal wiring harness also comes with relays that are used to control various electrical devices, such as the headlights, fuel pump, and cooling fan. The relays are designed to handle high-current loads and provide a reliable and efficient way to control electrical devices in the vehicle.
Easy to Install
The 21 circuit universal wiring harness is designed for easy installation. It comes with all the necessary connectors, terminals, and wiring instructions, making it easy for even inexperienced users to install it in their vehicle. The wiring diagram provided with the harness is easy to understand and follow, making the installation process a breeze.
Wiring Diagram for the 21 Circuit Universal Wiring Harness
Here is the wiring diagram for the 21 circuit universal wiring harness:
| Circuit | Function |
|---|---|
| 1 | Accessory power |
| 2 | Ignition power |
| 3 | Headlights |
| 4 | Horn |
| 5 | Brake lights |
| 6 | Rear lights |
| 7 | Turn signals (left) |
| 8 | Turn signals (right) |
| 9 | Fuel gauge |
| 10 | Tachometer |
| 11 | Speedometer |
| 12 | Electric fan |
| 13 | Power windows (left) |
| 14 | Power windows (right) |
| 15 | Power locks |
| 16 | Radio |
| 17 | Air conditioning |
| 18 | Electric choke |
| 19 | Backup lights |
| 20 | Dome light |
| 21 | Cigarette lighter |
As you can see, each circuit is clearly labeled and color-coded, making it easy to identify and troubleshoot any issues that may arise. The wiring diagram provided with the harness is easy to understand and follow, making the installation process a breeze.
FAQ
What is a wiring harness?
A wiring harness is a network of interconnected wires, connectors, and terminals that transmit electrical signals throughout a vehicle. It ensures that various electrical devices and systems function properly.
What is a 21 circuit universal wiring harness?
The 21 circuit universal wiring harness is a versatile and popular wiring harness that can be used for a wide range of applications. It consists of 21 separate circuits that provide power to various electrical devices in the vehicle.
What is the wiring diagram for the 21 circuit universal wiring harness?
The wiring diagram for the 21 circuit universal wiring harness is a diagram that shows the various circuits and their functions. It is easy to understand and follow, making the installation process a breeze.
Is the 21 circuit universal wiring harness easy to install?
Yes, the 21 circuit universal wiring harness is designed for easy installation. It comes with all the necessary connectors, terminals, and wiring instructions, making it easy for even inexperienced users to install it in their vehicle.
What are the key features of the 21 circuit universal wiring harness?
The key features of the 21 circuit universal wiring harness include multiple circuits, a fuse box, relays, and easy installation. These features ensure that the electrical system in the vehicle is reliable and robust.
What are some common issues that may arise with a wiring harness?
Some common issues that may arise with a wiring harness include short circuits, blown fuses, corroded connectors, loose wires, and damaged insulation. These issues can be easily identified and resolved with proper maintenance and troubleshooting.
Conclusion
The 21 circuit universal wiring harness is a versatile and popular wiring harness that can be used for a wide range of applications. It consists of 21 separate circuits that provide power to various electrical devices in the vehicle. The wiring diagram provided with the harness is easy to understand and follow, making the installation process a breeze. With its multiple circuits, fuse box, relays, and easy installation, the 21 circuit universal wiring harness ensures that the electrical system in the vehicle is reliable and robust.
