The grounding point design of the vehicle wiring harness plays an important role in the design of the vehicle wiring harness. If the design is not good, it will cause signal interference, thereby affecting the realization of the normal functions of some electrical appliances.
When choosing the location of the grounding point, the wiring harness of the whole vehicle follows the principle of the nearest grounding point. As far as its distribution is concerned, priority should be given to the main beams of the body/chassis. Unless there are special circumstances, it is generally not allowed to use metal brackets to ground. In addition, the grounding point with special arrangement requirements shall be given priority to comply with its special requirements, and this technical requirement shall be given priority in the design of the grounding point position. For the ground terminal in the wet area, it is necessary to consider waterproof treatment with heat-shrinkable tube with glue.
In the design of the grounding principle of the whole vehicle circuit, it is generally required that the ground wire be directly crimped to the ground terminal, and no parallel punching is allowed in the middle. However, in the actual vehicle wiring harness design and production, there is a phenomenon of grounding loop punching, otherwise it will cause too many grounding points of the wiring harness, winding of the grounding loop, too large diameter of the wiring harness, difficulty in assembly, and the effective layout space cannot meet the size requirements of the wiring harness and other problems. , the design should be determined according to the actual state.