What Is a Custom Wire Harness? A wire harness (also called a wiring harness or cable harness) is an assembly of electric cables or wires that transmit signals or electrical power. Unlike off-the-shelf cables, custom wire harnesses are engineered to match the exact routing, connector types, wire gauges, and labeling requirements of a specific product or machine. Wire Harness vs. Cable Assembly These terms are often used interchangeably, but there is a distinction: a cable assembly typically refers to a single cable with connectors on each end, while a wire harness refers to multiple wires bundled together with multiple branches and connector points, often wrapped in tape, conduit, or braid. Key Specifications to Define Before Sourcing Wire gauge (AWG): Common range AWG 18–30 for signal; AWG 10–16 for power Conductor material: Bare copper or tinned copper Insulation: PVC (standard), XLPE (high-temp), Teflon (PTFE, chemical-resistant) Connector type: JST, Molex, Dupont, custom — specify series and pin count Jacket / protection: PET braid sleeve, corrugated conduit, heat-shrink tubing Length tolerance: Typically ±3mm for harnesses under 500mm Quality Standards for Wire Harness For automotive applications, IPC/WHMA-A-620 is the key workmanship standard. For consumer electronics, IPC-A-620 Class 2 is standard. Hong YiAn follows IPC-A-620 Class 2/3 on request and conducts 100% electrical continuity testing and pull-force testing on all terminations. Lead Time and MOQ Typical lead times: samples in 7–10 days, production in 25–35 days. MOQ is flexible — Hong YiAn accepts orders from 100 pcs for simple assemblies and 500 pcs for complex harnesses. How to Request a Quote Provide: a wiring diagram or BOM, connector part numbers (or samples), wire spec, total length, and quantity. Hong YiAn will respond with DFM feedback and pricing within 24 hours. Browse Wire Harness Products | Browse Cable Assembly | Request a Quote