Ignition Coil Extension Wire Harness

Best Automotive Wiring Harness Companies

Automotive wiring harnesses are one of the most complex and crucial components in modern automobiles. Its quality directly determines the functionality, safety and reliability of the vehicle. From traditional fuel vehicles to intelligent and connected electric vehicles, wiring harness technology has been evolving at a rapid pace and is a challenging yet promising field in the innovation of the automotive industry.

SAISONIC is deeply involved in and leads all key processes of cables and wires, including cutting, stripping, crimping, pre-assembly, final assembly, conduction testing, appearance inspection and packaging. Proficient in mainstream domestic and international process standards such as USCAR, VW60330, QC/T 29106, etc. Our automotive wiring harnesses adopt standardized operations and are responsible for formulating and optimizing Sops (Standard Operating Procedures) and SIPS (Standard Inspection Specifications) to ensure the stability and repeatability of the production process. From drawing to mass production, we led the introduction of multiple new vehicle wiring harness projects, including drawing review, DFM/DFA (Design for Manufacturability/Assembly) analysis, tooling equipment development, Proto/PT/PP organization, and the formulation of Sops. We have passed the IATF 16949 automotive quality management system certification.

The composition and key components of car wiring harnesses

Wire conductors: copper (pure copper or copper alloys), solid and stranded.

Insulation layer: Mostly PVC (polyvinyl chloride) and XL-PE (cross-linked polyethylene) are used to provide electrical insulation and protection.

Wire gauge Select different cross-sectional areas (0.5mm², 0.75mm², 2.0mm², etc.) according to the current size.

Connector: Enables rapid connection/disconnection between wire harnesses and electronic devices, or between wire harnesses themselves.

Features: Equipped with locking mechanism, sealing ring (waterproof), gold/tin-plated terminals (anti-oxidation, ensuring contact).

Terminal: A metal component crimped to the end of a wire and inserted into a connector. It is the core of an electrical connection, and the crimping quality directly determines the reliability and resistance of the connection.

Protective materials

Tape: Used to bundle wires into bundles and provide wear-resistant protection. -

Conduit: Corrugated pipe, PVC pipe, used to provide mechanical protection in harsh environments (such as chassis, engine compartment). - Cable ties/clips: Used to fix the wiring harness at a specific position on the vehicle body.

SAISONIC is well aware of the significance of wiring harnesses as the "nervous system" of vehicles and integrates the "zero defect" concept throughout the entire manufacturing process. We are experts in automotive wiring harness manufacturing, capable of seeing both the "forest" (strategy and the overall project situation) and the "trees" (process details and quality issues). Our value lies in our ability to transform complex technical requirements into stable, economical and high-quality manufacturing processes, and ensure that each wire harness product meets or even exceeds customer expectations. Looking forward to further communication with you!