CUSTOM WIRE HARNESS PRODUCTS

Custom Wire Harness Products

Explore JOWCHAIN custom wire harness configurations for OEM electrical assemblies. Select the connection structure closest to your project, then define wire specifications, connectors, terminals, branch dimensions, identification and protection from your drawing and BOM.

Drawing / BOM based production

Custom connectors & terminals

Branch & routing customization

OEM wire harness manufacturing

Send Your Harness Drawing →

Custom wire harness products manufacturer China JOWCHAIN

PRODUCT MAP

Find the Right Harness by Connection Structure

Use the product image and connection structure to identify the configuration closest to your project before reviewing the detailed customization requirements.

Custom Ring Terminal Wire Harness

Ring-lug assemblies for bolted electrical and grounding connections.

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Custom Terminal Lead Wire Harness

Pre-terminated wire leads with custom terminal and contact configurations.

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Custom Multi-Branch Wire Harness

Main-trunk assemblies with multiple breakout points and connection branches.

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BMS Signal Wiring Harness

Signal and sensing circuits with defined connector pinouts and identification.

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BMS Multi-Connector Wiring Harness

BMS assemblies using multiple connector interfaces and controlled pin assignments.

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EV Low-Voltage Wiring Harness

Harness assemblies for EV auxiliary, sensing, signal and control circuits.

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PRODUCT SELECTION GUIDE

Start With the Connection Requirement

Similar-looking harnesses can serve very different purposes. Identify the connection, routing and circuit requirement first, then select the corresponding harness structure.

IF YOU NEED

Bolted or Grounding Connections

A ring-lug structure is appropriate when wires terminate at studs, grounding points or bolted electrical interfaces.

Choose: Custom Ring Terminal Wire Harness

IF YOU NEED

Individual Pre-Terminated Leads

Use terminal leads when the project consists mainly of separate wires with defined termination requirements.

Choose: Custom Terminal Lead Wire Harness

IF YOU NEED

One Trunk With Several Branches

Use a multi-branch structure when breakout positions, branch length and physical routing drive the design.

Choose: Custom Multi-Branch Wire Harness

IF YOU NEED

BMS Signal & Sensing Circuits

Use a BMS signal harness when circuit identification and signal-to-pin relationships are the main concern.

Choose: BMS Signal Wiring Harness

IF YOU NEED

Multiple BMS Connector Interfaces

Use a multi-connector structure when several BMS housings and pin assignments must be controlled together.

Choose: BMS Multi-Connector Wiring Harness

IF YOU NEED

EV Auxiliary & Control Circuits

Use an EV low-voltage harness when the assembly is designed around vehicle auxiliary, sensing and control circuits.

Choose: EV Low-Voltage Wiring Harness

PRODUCT COMPARISON

Compare Wire Harness Structures

The product name matters less than what must be controlled in the finished assembly. Use the table below as a quick specification reference.

Product	Main Structure	Key Control Point	Typical Selection Reason
Ring Terminal Wire Harness	Wire lead + ring lug	Stud size, lug and wire specification	Bolted or grounding connection
Terminal Lead Wire Harness	Individual terminated lead	Terminal ends and wire specification	Simple pre-terminated connection
Multi-Branch Wire Harness	Main trunk + multiple branches	Breakout position and branch dimensions	Complex physical routing
BMS Signal Wiring Harness	Signal and sensing circuits	Pinout and circuit identification	BMS sensing and signal connection
BMS Multi-Connector Harness	Multiple connector interfaces	Connector mapping and pin assignment	Several BMS mating interfaces
EV Low-Voltage Wiring Harness	EV low-voltage circuit assembly	Vehicle routing and connector interfaces	Auxiliary, signal and control circuits

CUSTOMIZATION SCOPE

Define the Harness Around Your Drawing and BOM

Custom harness production starts from the released component, dimension and electrical requirements rather than from a fixed catalog specification.

Wire Specification

Wire gauge, insulation, color and circuit reference.

Connector Housings

Mating interface, cavity configuration and project part numbers.

Terminals & Contacts

Crimp contacts and terminals matched to wire and connector requirements.

Harness Dimensions

Overall length, breakout points and individual branch dimensions.

Identification

Wire markers, connector IDs and branch labels where required.

Protection

Heat shrink, sleeve, tape or project-defined local protection.

FROM DRAWING TO PRODUCTION

Turn Harness Requirements Into a Controlled Assembly

Clear drawings, component information and circuit data reduce interpretation differences before production begins.

Review Drawing & BOM

Confirm wire, connector, terminal, dimension and circuit requirements.

Confirm Components

Match wire specifications, connector housings and terminal part numbers.

Build Harness Layout

Control lead lengths, branch positions, identification and protection.

Inspect Final Assembly

Verify components, dimensions and electrical relationships against released data.

PRODUCTS VS. SOLUTIONS

Start From the Product or Start From the Application

Product pages focus on the physical harness structure, while solution pages focus on the equipment environment and application requirements around the harness.

START WITH PRODUCTS

When You Already Know the Harness Structure

Use the product range when the connection type, branch structure, terminal form or connector configuration is already defined.

START WITH SOLUTIONS

When You Are Starting From the Equipment Application

If you know the equipment or industry environment but have not yet defined the exact harness structure, start from the application side.

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RFQ CHECKLIST

What Helps Us Quote a Custom Wire Harness?

Product photos help identify the general harness structure, but accurate quotation normally depends on the electrical, component and dimensional data behind the assembly.

Best starting point: send your drawing and BOM together with connector, terminal and expected quantity information.

01 Harness Drawing Overall dimensions, breakout points and branch layout.

02 Wire BOM Wire gauge, insulation, color and circuit references.

03 Connector Data Connector housing and mating-interface part numbers.

04 Terminal Data Crimp contacts, terminals and connection components.

05 Pinout / Circuit Electrical relationship where connector positions are involved.

06 Quantity Prototype, pilot and expected production volume.

FAQ

Custom Wire Harness Product FAQs

Start from the connection structure and electrical requirement. Identify whether the project is primarily based on terminal type, branch routing, BMS circuit control or EV low-voltage connections.

Yes. Drawings and BOMs can be used to define wire, connector, terminal, branch, identification and production requirements.

Yes. Connector housings, crimp contacts and terminal configurations can be produced according to approved component and drawing information.

Yes. Overall harness dimensions, breakout positions and individual branch lengths can be defined according to the released harness drawing.

Provide the harness drawing, wire BOM, connector and terminal data, circuit or pinout information where applicable, and expected production quantity.