The wiring harness is an important part of electrical. There are strict and proper steps in wire harness processing, which will determine the quality of wire harness processing. Therefore, every step of the wire harness production and processing steps must be highly valued and delicate.

1. Outer wrapping protection of front cabin wiring harness

The working environment of the cabin wiring harness is also relatively poor, especially in rainy and snowy weather and bad roads, which are greatly affected by the environment. The rest of the branches are also wrapped with corrugated pipes with good mechanical strength such as corrosion resistance and wear resistance, such as PP and PA corrugated pipes; due to the bending of the wires in the body layout, some branches are wrapped with PVC pipes, such as ABS wheel speed sensors. Even some branches are wrapped with duct tape with good abrasion resistance and high temperature resistance.

2. Outer wrapping protection of engine wiring harness

The engine wiring harness is fixed on the engine, the temperature is high, the vibration is large, and the working environment is harsh. Therefore, wrap it with a corrugated pipe with high flame retardancy, corrosion resistance and high mechanical strength, such as PA.PPmod corrugated pipe, and wrap it with PVC tape on the outside to play a role of complete sealing, or use high-performance polyester cloth base adhesive , Considering the bending direction of space, some branches can also use high temperature resistant PVC pipes.

3. Outer wrapping of door harness

The door wiring harness is installed in the door. Although the space is small, it is protected by an interior panel. It can be fully wrapped or wrapped with tape, and some branches can be wrapped with industrial plastic sheets or PVC pipes. The transition area from the door sheet metal hole to the interior wiring harness also needs to be protected by extremely tough rubber parts.

4. Outer wrapping of instrument wiring harness

The instrument harness is fixed under the instrument panel, and the working space is small. Due to the many instrument wiring harnesses and control functions, the instrument wiring harness has many branches, and the overall wiring harness is compact. But the environment here is better, you can wrap it with PVC tape or flowers, and some branches need to be wrapped with PVC pipes, such as accelerator pedals, airbag branches, etc. ;The wiring harness branch with audio function is generally wrapped with sponge tape, which has a good shock absorption effect and ensures good signal transmission; in order to achieve a good noise reduction effect, some parts need flannel tape.

5. Floor wiring harness, ceiling wiring harness dressing

For ceiling wiring harness and floor wiring harness, most of the branches will be installed in the body sheet metal holes with cable ties or clips, and have interior protection, the working environment is good, the trunk of the wiring harness can be directly wrapped with tape or flowers, and the entire wiring harness should be soft. Easy to install. According to the specific branch direction and fixing method, the branch can be wrapped with tape or flower, or can be protected with PVC pipe; if a certain part rubs against the body due to shaking, it can also be protected with PVC pipe. A floor harness branch is wrapped with flannel tape.

6. Heavy industry vehicle wiring harness dressing

Some heavy-duty vehicle wiring harnesses that work in harsh environments are generally used for braided nets due to their irregular appearance, which is affected by space and fixation. The protection of the internal joints of the wiring harness requires double-layer heat shrinkable tubes.

7. Wrap the branch paper tape

In order to facilitate loading, some branches in the wire harness need to be bundled with masking tape in advance; some important parts need to be wrapped with foam pads to prevent collision and damage during transportation, and the outside is bundled with masking tape. Masking tape is easy to tear, and the loading personnel can tear off the tape easily and quickly.

8. Wrap the battery positive and negative wire harness

The battery harness is generally short and connected to the battery. The outside is generally wrapped with corrugated pipe, and the outside is wrapped with PVC tape. The battery clips of the positive and negative poles of the battery are generally protected by a dust-proof rubber cap.

9. Airbag harness wrapping

Airbag wiring harness is a key component of automotive wiring harness, and its production and processing are particularly important. The protection outside the wiring harness generally requires yellow corrugated pipes and yellow PVC pipes, which are wrapped with yellow tape to serve as a good warning.