There is a common fault of automobile wire harness connectors between contact and wire short circuit, open circuit, ground etc..
Automotive wiring harness has the following aspects:
1) natural damage
Wire harness using exceeded the period of use, the wire aging, insulation layer rupture, mechanical strength decreased significantly, causing the wire between the short circuit, open circuit and ground, etc., resulting in wire bundles to burn out. Automotive wiring harness terminal oxidation, deformation, resulting in poor contact, will cause the electrical equipment can not work properly.
2) due to the fault of electrical equipment caused by damage to the wiring harness when electrical equipment overload, short-circuit and grounding fault occurs, are likely to cause wire beam damage.
3) human failure
Assembly or maintenance of automobile parts, metal objects will harness bruised, wire bundle insulation layer rupture; wire harness at the wrong position; the lead position of the electrical equipment connected to the wrong; anti connect battery positive and negative electrode wire; to repair the circuit fault, then chaos, chaotic shear automotive wiring harness etc. can to cause electrical equipment normal work, and even burn the automotive wiring harness