When your application demands more than simple wire bundles, PCB Insider delivers fully engineered cable harness systems that integrate power cables, signal wires, data lines, and connectors into a single, installation-ready assembly. From automotive engine bays to industrial control cabinets, our cable harnesses are built to perform in the environments that matter most.
A cable harness is more than a bundle of wires — it's the nervous system of your product. It carries power, transmits signals, routes data, and physically connects every electrical component into a functioning system. When that cable harness fails — in an operating room, inside an aircraft engine nacelle, or on a factory floor running three shifts — the consequences range from costly downtime to critical safety events.
That's why engineering teams at over 500 companies across 35 countries trust PCB Insider to design and manufacture their most demanding cable harness assemblies. Our vertically integrated facility handles everything from initial schematic review and formboard design through automated wire processing, manual routing, 100% electrical testing, and custom packaging — all under one roof and one quality system.
Unlike general contract manufacturers who treat cable harnesses as a sideline, harness engineering is our specialty. We understand the unique challenges of multi-branch routing, mixed cable types, and environmental protection that distinguish a cable harness from a simple cable assembly or wire harness. Every cable harness we produce is engineered for manufacturability, testability, and long-term field reliability.
While often used interchangeably, cable harnesses and wire harnesses serve different complexity levels. Understanding the distinction helps you specify the right solution for your application.
| Aspect | Cable Harness | Wire Harness |
|---|---|---|
| Structure | Combines cables, wires, connectors, and components into one integrated system | Groups individual wires together with a common covering |
| Complexity | Higher — multi-branch routing, mixed cable types, integrated components | Moderate — wire bundles with terminations at each end |
| Protection | Heavy-duty — convoluted tubing, braided sleeve, IP-rated enclosures | Standard — zip ties, tape wrapping, split loom |
| Applications | Engine bays, outdoor equipment, industrial machines, mil-spec systems | Interior electronics, panel wiring, low-stress environments |
| Signal Types | Hybrid — power + signal + data + coax + fiber in one harness | Primarily same-type wire bundles (power OR signal) |
Not sure which you need? Contact our engineering team — we'll review your requirements and recommend the most cost-effective solution.
From simple two-cable harnesses to complex multi-branch systems with 50+ breakout points, our manufacturing capabilities cover the full spectrum of cable harness complexity.
Complex cable harnesses with multiple breakout points, Y-splitters, and branching architectures. Precision-routed on custom formboards to match your exact installation geometry and mounting constraints.
Combine power cables, signal wires, coaxial lines, data cables, and fiber optics into a single unified harness. Our hybrid cable harness designs reduce installation time and eliminate point-to-point wiring complexity.
Complete connector integration from Molex, TE Connectivity, Amphenol, Deutsch, JAE, and Hirose. Crimped, soldered, or IDC terminations matched to your mating requirements with full pin-out documentation.
Cable harnesses engineered for extreme conditions: -55°C to +200°C operation, IP67/IP68 sealing, UV-resistant jacketing, chemical resistance, and vibration dampening for automotive underhood and outdoor installations.
Integrated shielding within the cable harness using braided sleeves, foil wraps, drain wires, and shielded connectors. Ensures electromagnetic compatibility for sensitive signal paths running alongside power conductors.
Convoluted tubing, braided sleeving, spiral wrap, heat-shrink boots, and split loom for cable harness protection. Custom labeling, color-coding, and wire markers for easy field installation and maintenance.
Custom formboards and assembly fixtures built to your harness routing specification. Ensures repeatable quality across production runs and enables rapid operator training for consistent build-to-build accuracy.
Power distribution cable harnesses handling up to 600V and 400A with properly rated busbars, fuse holders, relay sockets, and distribution blocks integrated directly into the harness architecture.
Every cable harness undergoes automated continuity testing, hi-pot testing, and insulation resistance verification on custom test fixtures. Functional testing available for harnesses with integrated electronic modules.
| Parameter | Specification |
|---|---|
| Wire Gauge Range | AWG 28 – AWG 4/0 |
| Cable Types | Power, signal, coaxial, data, fiber optic |
| Branch Points | Up to 50+ breakouts per harness |
| Harness Length | 100mm – 25m+ (custom lengths) |
| Operating Temperature | -55°C to +200°C |
| Voltage Rating | Up to 600V AC/DC |
| Current Rating | Up to 400A (busbar integration) |
| IP Protection | Up to IP68 |
| Connector Brands | Molex, TE, Amphenol, Deutsch, JAE, Hirose, JST |
| Covering Options | Convoluted tubing, braided sleeve, spiral wrap, heat-shrink |
| Quality Standard | IPC/WHMA-A-620 Class 2 & Class 3 |
| Prototype Lead Time | 5–7 business days |
| Production Lead Time | 2–4 weeks (volume dependent) |
A proven 6-step process built specifically for the unique demands of cable harness production — from formboard design through automated testing and delivery.
Submit your schematic, routing diagram, or even a legacy harness for reverse-engineering. Our engineering team performs a comprehensive Design for Manufacturing review — optimizing routing paths, connector selections, wire gauge, and protective coverings to reduce cost and improve reliability without altering electrical performance.
We create a detailed formboard layout that maps every branch, breakout, and connector position of your cable harness. Custom assembly fixtures with pin guides, connector holders, and routing pegs ensure every operator builds the harness identically — eliminating variation across shifts and production lots.
First article cable harnesses are built within 5–7 business days. Each prototype undergoes full electrical testing, dimensional verification against your routing specification, and fit-check documentation. We ship prototypes with a detailed inspection report so you can validate form, fit, and function before committing to production tooling.
Upon prototype approval, we finalize production documentation including the bill of materials, assembly work instructions, test procedures, and quality control checkpoints. Material procurement and long-lead connector scheduling begin immediately to minimize production lead time.
Production cable harnesses are built on dedicated assembly lines with station-by-station quality gates. Automated wire processing (cut, strip, crimp) feeds into manual routing and connector loading stations. Every crimp is force-monitored, every splice is inspected, and every branch dimension is verified against the formboard template.
100% end-of-line electrical testing on automated test fixtures confirms continuity, isolation, and hi-pot performance. Cable harnesses are labeled, serialized, and packaged per your specifications — including custom protective packaging for long or fragile assemblies. Full traceability documentation accompanies every shipment.
Our custom cable harnesses serve mission-critical applications across the world's most demanding industries — wherever organized, protected, and reliable wiring is non-negotiable.
Engine bay harnesses, body wiring harnesses, dashboard cable harnesses, EV battery management systems, charging infrastructure harnesses, and ADAS sensor cable assemblies built to IATF 16949 and OEM-specific standards.
Machine tool cable harnesses, robotic cell wiring systems, PLC cabinet harnesses, conveyor control harnesses, and drag-chain compatible cable assemblies designed for 24/7 continuous operation in factory environments.
Patient monitoring harnesses, surgical robot cable systems, imaging equipment interconnects, laboratory analyzer harnesses, and hospital bed wiring — manufactured in controlled environments with full biocompatibility documentation.
Avionics cable harnesses, aircraft interior wiring systems, UAV power distribution harnesses, ground support equipment cables, and mil-spec harnesses meeting AS9100, MIL-DTL-27500, and MIL-STD-1553 requirements.
Construction equipment harnesses, agricultural machinery cable systems, mining vehicle wiring, and marine vessel cable harnesses built to withstand extreme vibration, moisture, dust, and temperature cycling.
Solar inverter cable harnesses, wind turbine nacelle wiring, battery energy storage system harnesses, switchgear cable assemblies, and transformer monitoring harnesses designed for 25+ year outdoor service life.
“A cable harness isn't something you want to troubleshoot in the field. Every routing decision, every connector choice, every protective covering we specify is made with one question in mind: will this harness still perform flawlessly after 10 years of vibration, temperature cycling, and real-world abuse? That's the standard we engineer to — because our customers' products depend on it.”
All cable harnesses manufactured to IPC/WHMA-A-620 workmanship standards — the industry benchmark for cable and harness quality. Class 3 certification for high-reliability applications in aerospace, defense, and medical devices.
Certified quality management system governing every stage of cable harness production — from incoming material inspection and wire processing through final assembly testing and shipment.
Every cable harness undergoes automated continuity, hi-pot (dielectric withstand), and insulation resistance testing on custom-built test fixtures. No sampling — 100% of production is tested before shipment.
Complete traceability from raw wire and cable lot numbers through finished cable harness assemblies. Batch records, test data, material certificates, and certificates of conformance for every order.
Real-time crimp force monitoring on every terminated connection. Automated crimp height measurement and cross-section analysis ensure each termination meets IPC/WHMA-A-620 pull-force requirements.
Automotive quality management compliance for OEM cable harness programs. PPAP documentation, control plans, FMEA analysis, and 8D corrective action processes for automotive-grade harness production.
A cable harness integrates multiple cable types — power cables, signal wires, coaxial lines, and data cables — into a single organized routing system with protective covering and connectors. Unlike a simple wire harness that bundles individual wires together, a cable harness is engineered as a complete subsystem with built-in strain relief, EMI shielding, and environmental protection. Cable harnesses are typically used in harsher environments and more complex applications where reliability and serviceability are critical.
Custom cable harnesses are used across virtually every industry requiring reliable electrical interconnects: automotive and EV (engine bays, battery systems), aerospace and defense (avionics, ground support), industrial automation (robotics, CNC machines), medical devices (imaging, patient monitoring), heavy equipment (construction, agriculture), energy (solar, wind, storage), and telecommunications (base stations, data centers). Any application that requires organized cable routing in challenging environments benefits from a purpose-built cable harness.
We have no rigid minimum order quantity. We regularly produce single-unit prototypes for engineering validation as well as production runs of 50,000+ units per year. Our flexible manufacturing approach — using modular formboards and configurable test fixtures — allows us to remain cost-effective across all volume levels. For very low volumes (under 25 units), a one-time NRE fee covers formboard and test fixture setup.
Standard prototype lead time is 5–7 business days after design approval. This includes formboard setup, first article build, full electrical testing, and dimensional inspection. For rush requirements, we offer a 3-day express prototype service. Complex cable harnesses with custom molded components or specialty connectors with long procurement lead times may require 10–15 business days.
All cable harnesses are manufactured to IPC/WHMA-A-620 Class 2 (standard reliability) or Class 3 (high reliability) workmanship standards. Our facility maintains ISO 9001:2015 certification for quality management. For automotive customers, we comply with IATF 16949 requirements. We also provide UL-recognized harnesses and can manufacture to customer-specific quality specifications including aerospace AS9100 standards.
Yes — reverse engineering is one of our core capabilities. Send us your existing cable harness (or detailed photos with measurements), and our engineering team will create complete documentation including a schematic, bill of materials, routing diagram, and connector pin-out. This is particularly valuable for legacy equipment where original documentation is unavailable, or when you need to transition production from another supplier.
Point-to-point cable assemblies with custom connectors, overmolding, and shielding for any application.
Learn MoreComplete wire harness solutions with custom routing, labeling, continuity testing, and full documentation.
Learn MoreFull SMT and through-hole PCB assembly with automated inspection and functional testing.
Learn MoreUpload your schematic, routing diagram, or specifications and receive a detailed engineering review and competitive quote within 24 hours. From single prototypes to high-volume production, our team is ready to build the cable harness your system demands.
Free shipping on prototype orders | No minimum order quantity