What are the causes of damage in the use of automotive wiring harnesses?

Automotive wiring harness is often used thin tin card fixed, the edge of the sharp as a knife, and the surface of the tin card has not been added to the insulation measures, the vehicle in the long-term driving vibration, bumps, the power harness is inevitably worn, cut and ride, resulting in wiring harness burned.

1. Automotive wiring harness for the wire is not in accordance with the provisions of the selection of wire (wire is too thin), large currents through a large pressure drop and heat, resulting in gradual deterioration of the wire skin damage; 2. Installation of the battery carelessly, the positive and negative polarity reversal, alternator short-circuiting, each insulating gaskets and insulating sets of damage, the alternator magnetic field line and the lap wire reversal and so on will cause the wiring harness burned; 3. Automotive wiring harnesses are often used in the thin Automotive wiring harness is often used thin tin card fixed, the edge of the sharp as a knife, and the surface of the tin card is not added to the insulation measures, the vehicle in the long-term driving vibration, bumps, power harness is inevitably worn out, cut and iron, resulting in wiring harness burned;

4. Automotive wiring harness temporary connection of electrical equipment, do not figure out the fuse current inlet and outlet, that is, arbitrarily lead out the power line, or fuse burned, not according to the requirements of the same specifications for the fuse, or with a thick copper wire instead of fuse, the loss of the protective effect of the wiring harness burned; 5. Ammeter of the two columns are often used in the plastic insulating sleeve, the plastic heat dissipation is poor, not only to withstand the current, but also to withstand the bumps and vibration, if the ammeter wiring If the ammeter wiring is loose or contact is not good, it will lead to temperature rise, resulting in plastic melting and hitch, resulting in automotive wiring harness burnt; 6. Column connection is not secure, resulting in a large pressure drop and heat, over time, the insulating gaskets will be damaged and hitch short-circuit. Pay attention to the ammeter and other instruments after the post to be connected, in addition to fixed in the frame terminal board wire connection screws should not be too long, so as to avoid the iron and burned harness.

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