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

The safety function of the automotive wiring harness is to fully ensure that once the automotive wiring harness problems then it will affect the normal operation of the car function, so the use of automotive wiring harness will lead to damage to the automotive wiring harness to be specific analysis of the reasons for the timely adoption of the approach.
1, the automotive wiring harness for the wire is not in accordance with the provisions of the selection of wire (wire is too thin), high current through the period of a large pressure drop and heat, resulting in the gradual aging of the wire skin damage;
2, the device battery when careless, positive and negative polarity reversal, short circuit within the alternator, the insulation gasket and insulation sleeve damage, alternator magnetic field line and the reverse lap wire will cause the wiring harness burned;
3, the automotive harness is often used thin tin card fixed, the edge of the sharp as a knife, and tin card appearance is not added to the insulation method, the vehicle in a long period of time in the oscillation, fluctuations, the power harness can not help but be abraded, cut and iron, forming a wire harness incineration;
4, the automotive wiring harness temporarily connecting 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 the fuse, the loss of protection and incineration of the wiring harness;
5, the ammeter's two columns are often selected plastic insulating sleeve, plastic heat dissipation is poor, both to withstand the current, but also to withstand fluctuations and oscillations, if the ammeter wiring loose or touch is not good, will lead to a rise in temperature, resulting in the plastic burned melted and ride, the formation of wiring harness incineration;
6, the connection is not reliable, a large pressure drop and heat, over time, the insulating gasket will be damaged and hitch short circuit. Pay attention to the ammeter and other instruments to be articulated after the column, and other fixed in the frame on the terminal board wire connection screws should not be too long, to avoid the iron and incineration of the wire harness.

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