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2022.11.15

Reasons for Damage to Automotive Wiring Harnesses

1. When replacing wires in an automotive wiring harness, failing to select wires according to specifications (using wires that are too thin) can result in a significant voltage drop and heat generation when large currents pass through them, gradually causing the wire insulation to age and deteriorate. 2. Carelessness during battery installation—such as reversing the positive and negative terminals, causing a short circuit inside the alternator, damaging insulating gaskets and insulating sleeves, or incorrectly connecting the alternator’s field winding and ground wire—can all lead to burning of the wiring harness.

Reasons for Damage to Automotive Wiring Harnesses

2022.11.15

How do you determine the quality of an electronic wire harness?

An electronic wire harness is a shorthand term for the internal wiring of electrical equipment. The electricity carried by these harnesses is typically low-voltage, distinguishing them from cables used in high-voltage environments. There are three main standards for electronic wire harnesses: UL standard, 3C standard, and VDE standard. AWG is generally associated with the UL standard, while cross-sectional areas in square millimeters are usually specified under the 3C or VDE standards. Domestically, electronic wire harness manufacturers primarily focus on either the 3C or UL standards.

How do you determine the quality of an electronic wire harness?

2022.11.15

Maintenance methods for electronic wire harnesses

Take the electronic wiring harness for an automobile engine as an example: Inside the engine’s electronic wiring harness, there are typically multiple copper flexible wires encased in plastic. The engine is the heart of the car. If the wiring is defective, it can adversely affect the engine’s performance. When the electronic wiring harness operates for extended periods in the high-temperature engine compartment, its outer casing may crack and peel off, exposing the underlying wires and causing electrical leakage.

Maintenance methods for electronic wire harnesses

2022.11.15

What are the four key issues that need to be checked regularly for electronic wire harnesses?

1. Check whether the electronic wiring harness is affected by corrosive factors, and avoid damage to the harness caused by corrosion. 2. Verify that the connections of the electronic wiring harness are normal, thereby preventing harness-related mechanical failures. 3. Inspect the electronic wiring harness for any breaks or disconnections, ensuring that it is free from defects. 4. Check whether the terminals of the electronic wiring harness are loose; this can effectively prevent poor electrical contact issues. In addition, for electronic wiring harness inspectors, it is also crucial to have a better understanding of the relevant equipment, the tracking records of the wiring harnesses, and the personnel operating the machinery. If maintenance records are incomplete or absent, potentially foreseeable problems may be overlooked, leading to higher maintenance and replacement costs.

What are the four key issues that need to be checked regularly for electronic wire harnesses?

2022.11.15

Key Points for Quality Inspection of Wire Harness Processing

When conducting wire harness quality inspections, pay attention to the following key steps: 1. Wire Cutting: Verify that the wire dimensions meet the relevant requirements and that the wire model is correct. The cut edges must be neat and smooth—avoid scratching the wires—and ensure that the wires are free from any dirt or contamination. 2. Bundling and Processing: Check whether the trimming is neat and the dimensions are accurate. During the bundling and trimming process, make sure not to nick or damage the core wires.

Key Points for Quality Inspection of Wire Harness Processing

2022.11.15

Automotive Wire Harness Burnout Phenomenon and Its Causes

There are two common combustion characteristics of wire harnesses: One is when an external ignition source causes the wire harness to burn, in which case the harness is visibly covered with charred carbon black, and the burning progresses from the outside inward. The other occurs when an electrical circuit overload causes the wires to heat up intensely, melting the fabric and resulting in burning that starts from the inside out. The damage to wire harnesses is primarily caused by the following conditions.

Automotive Wire Harness Burnout Phenomenon and Its Causes

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