The wiring harness for car is a collection of wires that connect various electrical and electronic devices of the vehicle. These wires form a complex network inside the vehicle for transmitting power and signals. The wiring harness is usually composed of wires, terminals, connectors, protective covers and other components. They are carefully designed and arranged to ensure that the various electrical systems inside the vehicle can work normally and efficiently.
The wiring harness for car plays a vital role in the automotive field. Their main functions include:
Power transmission: The wiring harness is responsible for transmitting power from the battery or generator to various electrical devices in the vehicle, such as the engine, lights, audio, etc.
Signal transmission: The wiring harness is also responsible for transmitting signals between various sensors and actuators to achieve automatic control and intelligent management of the vehicle. For example, the engine control unit (ECU) receives data from various sensors through the wiring harness and controls the operation of the engine based on this data.
Protecting the circuit: The design and protection measures of the wiring harness can prevent the circuit from being disturbed and damaged by the external environment, such as waterproof, dustproof, shockproof, etc.
Improve assembly efficiency: The standardized and modular design of the automotive wiring harness makes the assembly process simpler and faster, reducing production costs and assembly time.
Automotive wiring harnesses can be classified according to their functions and installation locations. Common classification methods include:
Main Wiring Harness:
The main wiring harness is one of the most important wiring harnesses in a car. It connects the main electrical system of the vehicle.
Automotive wiring harnesses can be classified according to their functions and installation locations. Common classification methods include:
Main Wiring Harness:
The main wiring harness is one of the most important wiring harnesses in a car. It connects the main electrical system of the vehicle.
Responsible for distributing power from the battery or generator to various subsystems, such as the engine, transmission, body control module, etc. It is usually installed in the center of the vehicle, such as in the engine compartment or at the bottom of the cockpit.
Engine Wiring Harness:
A wiring harness that connects various sensors, actuators, and control modules of the engine.
Responsible for transmitting engine-related power and signals, including ignition systems, fuel injection systems, sensors, etc. It is installed in the engine compartment and is closely connected to the engine.
Body Wiring Harness:
A wiring harness that connects various electrical devices inside the vehicle. Responsible for providing power and signals for lights, electric windows, central locking systems, air conditioning systems, audio systems, etc. inside the vehicle. Distributed in various locations inside the vehicle, such as doors, seats, dashboards, etc.
Dashboard Wiring Harness:
A harness that connects the instrument panel and various instruments and indicators on the dashboard. Responsible for transmitting power and signals related to driver information, such as the speedometer, tachometer, fuel gauge, etc. Installed inside the dashboard and closely connected to the dashboard.
Door Wiring Harness:
A harness that connects the electrical equipment inside the door. Responsible for providing power and signals to the electric windows, electric locks, and other equipment inside the door. Installed inside the door and connected to the door electrical equipment.
Seat Wiring Harness:
A harness that connects the electrical components on the seat. Responsible for providing power and signals to the heating device, regulator, etc. on the seat. Installed inside or at the bottom of the seat.
Trunk Wiring Harness:
A harness that connects the electrical equipment in the trunk area. Responsible for providing power and signals to the lights, wipers, etc. in the trunk area. Installed inside or at the bottom of the trunk.
Headlight Wiring Harness:
A wiring harness that connects the headlights and front lighting equipment. It is responsible for providing power and signals to the headlights and front lighting equipment to ensure driving safety. It is installed inside the lighting system at the front of the vehicle.
Front and Rear Bumper Wiring Harness:
A wiring harness that connects the electrical equipment on the front and rear bumpers. It is responsible for providing power and signals to the sensors, fog lights and other equipment on the front and rear bumpers. It is installed inside the front and rear bumpers of the vehicle.
Throttle Body Wiring Harness:
A wiring harness that connects the throttle position sensor and actuator. It is responsible for transmitting the throttle position signal to control the acceleration and throttling of the engine. It is installed in the engine compartment and is closely connected to the throttle.
Automotive wiring harnesses have a wide range of applications in the automotive field. They are one of the key components for realizing vehicle electrification and intelligence. The following are some of the main applications of automotive wiring harnesses in the automotive field:
Engine management system: The wiring harness connects the engine control unit (ECU) and various sensors and actuators to achieve precise control and optimized performance of the engine.
Body control system: The wiring harness connects the body control module (BCM) and various body electrical equipment, such as lights, windows, door locks, etc., to achieve automatic control and intelligent management of the body.
Safety system: The wiring harness connects safety equipment such as airbag controllers and collision sensors to ensure that airbags and other protective measures can be activated in time when the vehicle collides.
Infotainment system: The wiring harness connects infotainment equipment such as audio systems, navigation systems, and car phones to provide rich driving experience and entertainment functions.
Intelligent driving assistance system: The wiring harness connects intelligent driving assistance equipment such as automatic driving systems, radar sensors, and cameras to realize the vehicle's automatic driving and intelligent navigation functions.
Automotive wiring harnesses are one of the indispensable components in the automotive field. By transmitting power and signals, the various electrical systems of the vehicle are closely connected together, realizing the electrification and intelligence of the vehicle.
