Custom wire harness assemblies

Nexharn produces custom wire harnesses based on drawings, samples, pinouts, connector requirements, terminals, wire gauge, routing, and application environment. We help industrial buyers and product brands turn wiring requirements into manufacturable assemblies.

Typical applications

Electronics products
Equipment wiring
Control systems
Automotive and industrial assemblies

RFQ details

Send drawings, connector models, wire gauge, circuit count, terminal requirements, length tolerance, test requirements, and target quantity.

Key Specifications at a Glance

2 to 50+ conductors per harnessCustom designs from simple 2-wire assemblies to complex multi-branch looms.

Molex / TE / JST / DeutschMajor connector families supported; custom tooling for high-volume programs.

10-28 AWG conductorsWire gauge matched to circuit current load and routing requirements.

IP54 to IP68+ sealing optionsOpen crimp, sealed, over-molded, and potted assemblies for all environment levels.

From drawing or sampleRFQ accepted from engineering drawings, reference samples, or circuit diagrams.

Typical Applications

Product wiring Equipment wiring Control systems Custom electronics

Customization Options

Connector and terminal selection

Wire gauge and color

Pinout by drawing

Labeling and routing

Specification Checklist

Circuit count	Confirm by RFQ, drawing, sample, or target market requirement.
Wire gauge	Confirm by RFQ, drawing, sample, or target market requirement.
Connector model	Confirm by RFQ, drawing, sample, or target market requirement.
Drawing or sample reference	Confirm by RFQ, drawing, sample, or target market requirement.

Wire Harness Assembly Method Comparison

Assembly Method	Seal / Protection	Relative Cost	Best Suited For
Open crimp connector	None	Low	Indoor dry environments
Sealed crimp + grommet	IP54-IP67	Medium	Outdoor and moisture-exposed use
Over-molded connector	IP67-IP68	High	Automotive, marine, and industrial
Potting / encapsulation	IP68+	Very high	Harsh environments and vibration
Braided / shielded sleeve	EMC shielding	Medium	High-noise and EMI environments

How to Choose the Right Wire Harness

Environmental IP ratingDetermine required dust and water ingress protection first, then select the connector sealing method.

Connector familyMatch existing connector families in your product (Molex, TE, JST, Deutsch) for plug-and-play compatibility.

Wire gauge by circuitSelect AWG based on maximum current load per circuit. Provide circuit schematic or reference harness.

Routing and branch pointsProvide cable routing diagram, branch locations, clip positions, and mounting references for accurate layout.

Purchasing Specification for RFQ

To receive an accurate quote faster, please confirm the commercial and technical details below when sending your cable requirement.

MOQFlexible by cable type, connector, packaging, and customization level.

Sample lead timeUsually quoted after drawing, sample, or specification review.

Production lead timeConfirmed based on order quantity, material availability, and packaging needs.

Packaging optionsBulk pack, polybag, retail box, barcode label, private label, and export carton.

DocumentsSpecification sheet, inspection notes, compliance documents, and packing details on request.

Quote details neededSend drawings, pinout, terminal requirements, wire gauge, length tolerance, testing needs, and target quantity.

Need the product catalog?

Download the catalog or request it with your RFQ to compare cable categories, customization options, and manufacturing capabilities.

Request Catalog

Why B2B buyers choose Nexharn

Nexharn combines factory capacity, quality documentation support, and practical RFQ communication for custom cable and wire harness sourcing programs.

5,000 sqmfactory area for cable, harness, inspection, and packaging work

100+ employeesproduction, QC, engineering support, sales, and export coordination

100,000 pcs/monthmonthly capacity for standard and custom cable programs

ISO 9001 / CE / RoHS / UL / REACHdocumentation and compliance support for global B2B buyers

Wire cutting machines
Terminal crimping machines
Injection molding equipment
Cable testing instruments
Aging test equipment

Buyer FAQ

Can Nexharn make this product with custom length or connector?

Yes. Please send the required length, connector type, drawing, sample photo, or target specification for review.

Can you support private label packaging?

Packaging can be reviewed based on your sales channel, carton requirement, barcode label, and destination market.

What should I include in an RFQ?

Send drawings, pinout, terminal requirements, wire gauge, length tolerance, testing needs, and target quantity.

Can Nexharn produce wire harnesses from a photo or physical sample?

Yes. We accept engineering drawings (DXF, PDF), photos of existing harnesses, or physical samples for reverse engineering and quotation.

What is the typical sample lead time for a custom wire harness?

Sample lead time is typically 7-14 business days after drawing review and material confirmation. Production lead time is confirmed per quantity.

Do you support over-molding for IP67 sealed connector assemblies?

Yes. Over-molded connectors with IP67 and IP68 ratings are available. Tooling cost and mold design are confirmed during the sampling stage.

Related sourcing guides and cases

Continue comparing specifications, buyer checklists, and case examples before sending your RFQ.

Wire harness manufacturing checklist Industrial wire harness case study Request wire harness quote Quality & Compliance Support

B2B buyer reviews

What buyers say about sourcing with Nexharn

B2B cable sourcing feedback from importers, distributors, and industrial buyers across Europe, Asia-Pacific, and the Americas.

5.0

★★★★★ 5 verified B2B sourcing programs

HDMI Cables ★★★★★

We sourced custom HDMI 2.1 cables with retail packaging for two distribution channels. Nexharn confirmed the connector spec, approved samples before mass production, and kept communication clear throughout the program.

James Eriksson Nordic AV Supply — Sweden

USB-C Cables ★★★★★

We needed USB-C cables for a private label consumer electronics program. Nexharn helped finalise the data and charging spec, packaging format, and barcode details before production. Repeat orders have been consistent.

Marco Ferreira BrazoTech Electronics — Brazil

Wire Harnesses ★★★★★

We required custom wire harness assemblies to a specific pinout drawing. Nexharn reviewed the circuit layout, confirmed terminal models, and prepared sample sets for approval. The RFQ process was straightforward and professional.

Sarah Mitchell Pacific Cable Group — Australia

Power Cables ★★★★★

Nexharn supplied a custom power cable program for our industrial distribution range. CE and RoHS requirements were confirmed early in the specification phase, and quality has been consistent across production runs.

Andreas Weber EuroCable GmbH — Germany

Industrial Cable Assemblies ★★★★★

We needed an industrial cable assembly supplier with repeatable quality and documentation support for the Japanese market. Nexharn met our inspection expectations and packaging requirements consistently.

Yuki Tanaka TechSource Japan — Japan

Custom Wire Harness Manufacturer from Drawing or Sample