The number and types of wire harnesses included in a car vary by model and configuration, but in general, a medium-sized or large car usually contains dozens to hundreds of wire harnesses. Different components and systems require different types of wiring harnesses, such as engine systems, steering systems, brake systems, instrument panels, audio, lighting, airbags, and more.
The number and length of some automotive wiring harnesses are as follows:
Engine wiring harness: usually contains dozens of wires, and the total length is usually between several meters and tens of meters.
Dashboard wiring harness: usually contains dozens to hundreds of wires, and the total length is usually between several meters and tens of meters.
Door wiring harness: Each door usually contains several wires, usually ranging from tens of centimeters to several meters in length.
Trunk wiring harness: includes control equipment such as trunk lights, trunk door locks, and trunk switches. The length is usually between tens of centimeters and several meters.
Audio wiring harness: usually contains wires and connectors for audio and speakers, and the length is usually between several meters and tens of meters.
Lighting wiring harness: including lighting control equipment such as headlights, taillights, brake lights, and reversing lights. The number and length vary depending on the model.
These wiring harnesses usually need to be carefully designed and manufactured, and undergo rigorous testing and certification to ensure that they can work stably and maintain a long service life in various harsh environments used by vehicles.
