Having worked in the wire harness industry for so long, all my colleagues and friends must have a good understanding of wire harness knowledge. So if your car's wiring harness is broken, should you repair it or replace it with a new one? The following editor will solve this doubt for you.

The engine wiring harness is broken and replaced directly:

1. If the engine wiring harness is damaged, the signal will be inaccurate, which will cause the vehicle to fail to start, and may also cause a fire;

2. The wiring harness is the network main body of the automobile circuit. Without the wiring harness, there is no automobile circuit. The wiring harness refers to the contact terminal made of copper material and the wire and cable after being crimped, and then the outer plastic pressure insulator or external metal shell. etc., are bundled with wire harnesses to form components that connect circuits.

Some reasons for car wiring harness breakage:

1. Internal reasons:

1. The vehicle is broken during operation due to the short design of the branch line allocated by the main wiring harness of the vehicle;

2. When the manufacturer designed the wiring harness, it did not implement the manufacturing standards, did not meet the standards, and did not standardize the manufacturing;

3. The wire harness is twisted too tightly when the assembly line is assembling the wire harness, resulting in breakage.

2. External reasons:

1. The wiring harness is broken due to the modification of the wiring harness;

2. The wire harness is broken due to the rat bite;

3. The wire harness is broken due to being scratched;

If the engine wiring harness is broken, the signal will be inaccurate and the vehicle will not be able to start, and it may also cause a fire; the car wiring harness is the main body of the car circuit network, and there is no car circuit without the wiring harness. Wire harness refers to a component that is formed by bundling the wire harness to form a connection circuit after the contact terminal punched out of copper is crimped with the wire and cable, and then an insulator or a metal shell is added on the outside.

The four functions of wire harness maintenance:

1. Reduce circuit impedance and improve system circuit efficiency.

2. Unique flame retardant properties, improve the high temperature tolerance of vehicles.

3. It has relatively strong permeability and can effectively repair line cracks.

4. A protective film is formed on the surface and at the plug to isolate moisture, resist oxidation and rust.

When there is a problem with the engine line of the car, it must be maintained and repaired in time to reduce the potential safety hazards of the car.

Methods of repairing damaged wiring harnesses:

(1) First remove the burnt wire harness insulation coating, cut off both ends of the burnt wire, reconnect the burnt wire with wires of the same specification and length, and wrap each connector with insulating tape.

(2) When wiring, divide the two ends of the connected wire into two halves, and twist them together, then twist the two twisted wires together, and bend them to be parallel to the wires and close to the wires. Put on insulating tape.

(3) If the wire harness is completely broken, connect it with a short wire. When connecting, the wire connectors should be staggered from each other, each connector should be wrapped with insulating tape, and finally the connected wires should be wrapped with insulating tape.

The length of the original wire harness should not be shortened when wiring. If there are too many burnt wires, one can be cut and then connected to prevent wrong connection.

The above is about the broken car wiring harness, under what circumstances to replace it, and under what circumstances it needs to be connected. I hope this article can help you solve this question.