How to choose electronic wiring harness?

Electrical harnesses are actually electrical harnesses, which connect switches, appliances, sensors, power supplies, and all electrical and electronic equipment in the engine compartment, in the cockpit, and outside the driver's room. Characteristics due to the use of the car itself, such as: it must be repeated experience the sweltering heat, cold, bumps and other harsh environment and conditions of use, it decided the technical requirements of automotive electrical and electronic equipment, so the technology requirements of automotive electrical wiring harness is mainly: the correctness of the circuit and continuity, vibration and impact, alternating hot and humid, high temperature, low temperature, salt fog and industrial solvents, etc.