Optimizing Heavy-Duty Truck Wiring: Design Requirements, Specifications, and Assembly Solutions

Automotive wiring harness plays a key role in automotive circuits, and the design and assembly process are crucial. This article will discuss in depth the design requirements and specifications of heavy-duty truck automotive wiring harnesses, as well as problems and improvements often encountered during the assembly process.

1.1 Innovative wire harness design process

The design principles of automotive wiring harnesses should be the shortest wire distance, the minimum number of wires, the most appropriate wire cross-section, and the selection of appropriate connectors and terminals to ensure correct and reliable connections, thereby improving work reliability. The complete six-level project wire harness design includes electrical function table design, fuse and relay configuration, schematic design, three-dimensional wire harness and power distribution device layout, wire harness two-dimensional diagram generation, wire harness and power distribution device installation diagram generation, and wire harness system details generation , wiring harness assembly verification and electrical system functional verification.

Connector Wiring Harness

1.2 System and component anatomy of design specifications

The design specifications span multiple systems and components, covering 370 electrical schematics, 374 body wiring harness, 362 chassis wiring harness, etc. Chassis wire harness includes frame wire harness, engine wire harness, transmission wire harness, flip mechanism wire harness, starter power wire, battery wire, ground wire, etc.; body wire harness includes body main wire harness, ceiling wire harness, left door wire harness, right door wire harness, etc.

350A 600V Plug Wire One Drag Six Harness

2.1 Advanced ETX vehicle wiring harness classification

The ETX vehicle wiring harness is divided into two parts: body and chassis. The body wiring harness includes the main body wiring harness assembly, the cab ceiling wiring harness assembly and the left/right door wiring harness assembly (with electric door windows). The chassis wire harness includes the front frame wire harness assembly, the rear frame wire harness assembly, the engine pre-installed wire harness, the flip mechanism wire harness, the transmission wire harness and the power cable.

EC5-F/M car emergency start power cord

 2.2 Customized optional series

The vehicle also covers some optional assemblies, such as brake wire harness assembly, ABS wire harness (inside the cab) and disc bridge wire harness assembly. The brake wiring harness assembly contains the solenoid valve and wheel speed sensor, the ABS wiring harness contains the ECU and ABS switch, and the disc bridge wiring harness assembly includes the friction plate switch.

Through carefully designed and standardized wiring harnesses, we are committed to improving the performance and reliability of automotive circuits to ensure that the vehicle reaches its best condition during use.