Each wire harness material has its own characteristics, such as high temperature resistance, low temperature resistance, etc. These wire harnesses are aimed at some special application fields, just like the car wire harness is very cautious in the selection of materials.
Automotive wiring harnesses, including their electrical properties, material emissions, temperature resistance, etc., have higher requirements than general wiring harnesses, Especially when it comes to security: the wiring harnesses for important components such as direction control systems and brakes are more stringent.
Next, I will give an example to explain the route of several common automotive wiring harness materials:
1. The ambient temperature around the engine is high, and there are also many corrosive gases and liquids. Therefore, the wire of the engine harness must use high temperature, oil, vibration, and friction resistant wires.
2. The wires on the automatic transmission use hydraulic oil, high temperature resistance, and good temperature stability.
3. The wires of the harness on the luggage compartment cover must maintain their elasticity at low temperatures, so cold elastic wires should be selected to ensure their normal operation.
4. Weak signal sensor should use shielded wire, such as knock sensor and crankshaft position sensor, ABS wheel speed sensor, etc.
5. The ABS wire harness assembly uses 150-200℃ high temperature resistance, the outer protective insulation layer is hard and wear-resistant, but the wire core should be greater than 133 stranded wires.
6. The power line, such as the starter alternator output line and the battery wire, is a special wire with good heat dissipation performance and low voltage that can withstand high current insulation.