A universal wiring harness is a tool that is used to connect various components in a car, truck, or motorcycle. It is commonly used by mechanics and car enthusiasts to make repairs, upgrades, or modifications to their vehicles. The 12 circuit universal wiring harness diagram is a schematic representation of the wiring connections for a 12 circuit harness. This article will discuss the different components of the harness, provide a detailed diagram, and answer frequently asked questions about the tool.
Components of the Harness
The 12 circuit universal wiring harness consists of several components that work together to create a complete electrical system. These include:
- Power wire
- Ground wire
- Fuse block
- Relay
- Switches
- Lights
- Horn
- Electric fan
- Radio
- Electric fuel pump
- Gauges
- Wiper motor
Each of these components has a specific function, which is outlined in the wiring diagram.
Wiring Diagram
The wiring diagram for a 12 circuit universal wiring harness is shown below:
| Wire Color | Function | Location |
| Red | Ignition Switch | Column |
| Yellow | Battery | Starter |
| Purple | Electric Fuel Pump | Relay |
| Blue | Electric Fan | Relay |
| Orange | Accessory | Switch |
| Brown | Headlights | Switch |
| Green | Horn | Switch |
| Gray | Gauges | Cluster |
| Black | Ground | Chassis |
The diagram shows the color-coded wires and their corresponding functions and locations. The ignition switch wire is color-coded red and located on the column, while the battery wire is yellow and located on the starter. The electric fuel pump wire is purple and connected to a relay, while the electric fan wire is blue and also connected to a relay. The accessory wire is orange and connected to a switch, while the headlights wire is brown and connected to another switch. The horn wire is green and connected to a switch, while the gauges wire is gray and connected to the cluster. Finally, the ground wire is black and connected to the chassis.
FAQ
What is a universal wiring harness?
A universal wiring harness is a tool used to connect various components in a car, truck, or motorcycle. It is commonly used by mechanics and car enthusiasts to make repairs, upgrades, or modifications to their vehicles.
What is the function of a 12 circuit universal wiring harness?
The function of a 12 circuit universal wiring harness is to create a complete electrical system that connects various components in a car, truck, or motorcycle. This includes the battery, ignition switch, electric fuel pump, electric fan, accessory switch, headlights switch, horn switch, gauges, wiper motor, and other components.
What are the components of a 12 circuit universal wiring harness?
The components of a 12 circuit universal wiring harness include power wire, ground wire, fuse block, relay, switches, lights, horn, electric fan, radio, electric fuel pump, gauges, and wiper motor.
What is the color coding for a 12 circuit universal wiring harness?
The color coding for a 12 circuit universal wiring harness is as follows:
| Wire Color | Function |
| Red | Ignition Switch |
| Yellow | Battery |
| Purple | Electric Fuel Pump |
| Blue | Electric Fan |
| Orange | Accessory |
| Brown | Headlights |
| Green | Horn |
| Gray | Gauges |
| Black | Ground |
Where can I buy a 12 circuit universal wiring harness?
A 12 circuit universal wiring harness can be purchased from automotive supply stores, online retailers, or directly from the manufacturer. It is important to select the correct harness for your specific make and model of vehicle.
How do I install a 12 circuit universal wiring harness?
Installation of a 12 circuit universal wiring harness requires basic knowledge of electrical wiring and the use of common tools such as wire strippers, crimpers, and pliers. It is recommended to follow the manufacturer’s installation instructions carefully and to seek the assistance of a professional if necessary.
Overall, a 12 circuit universal wiring harness is a useful tool for anyone who wants to connect various components in their car, truck, or motorcycle. The included diagram and frequently asked questions provide a comprehensive guide to the tool’s function, components, and installation.
