Capability

Wire Harness Assembly / Connectorization

MTTJ assembles branched harnesses and connectorized leads from drawings and BOMs. Work can include cutting, stripping, crimping, specified soldering, routing protection, labels, electrical checks, and packing.

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Multi-branch cable harness with a circular connector photographed on a green factory floor

Branches, terminations, protection, IDs

Is a harness drawing and bill of materials available?
Which connector and terminal part numbers are specified?
How should branches, labels, and routing protection be arranged?
What tests are required before shipment?

Drawing details needed for harness layout

Harness drawing, BOM, branch lengths, and routing protection
Connector and terminal part numbers with wire type, gauge, labels, sleeving, tape wrap, and tie points
Continuity, fixture, pull-force, functional, final inspection, packing, or shipment record method

Inspection

What is checked on the harness

Branch lengths, crimp and solder points, connector fit, labels, sleeving, tie points, circuit identity, and packing are checked against the drawing.

Crimping	Pull force, crimp height, and appearance are controlled against terminal and wire requirements.
Routing	Branch length, tie points, sleeving, tape wrap, and labels follow the harness drawing.
Testing	Continuity, polarity, functional, and visual inspection steps follow the supplied method.

Process examples

Visible process details tied to RFQ inputs

These images show where drawings, dimensions, connector details, materials, tests, and records affect the manufacturing step.

Wire cutting and stripping equipment inside the MTTJ Tianjin workshop — Wire cutting and stripping equipmentThe pictured cutting and stripping equipment supports wire preparation. Cut length, strip dimensions, terminal setup, and inspection points follow the project drawing and build record.

Wire harness routed on a layout board with branch paths and connector positions — Harness layout boardLayout boards help compare branch lengths, connector positions, tie points, and routing protection against the drawing.

Multi-branch wire harness with several connector styles on a white background — Connectorized branch harnessConnectorized harness example shows why BOM, terminal data, wire gauge, branch dimensions, and test method belong together.

Stamped metal terminals attached to a carrier strip on a light surface — Stamped terminal stripThe terminal strip shows a supplied terminal form. Pair the terminal family and carrier format with wire gauge, crimp data, pull checks, and visual inspection criteria.

In‑house process

Wire preparation, harness assembly

MTTJ cuts and strips wire, crimps terminals, solders where specified, lays out branches, adds protection and labels, and performs the stated electrical checks.

Wire cutting
Wire stripping
Terminal crimping
Soldering
Vertical overmolding / insert molding
Assembly
Electrical testing
Ultrasonic welding
Automatic cut-strip-crimp
Coaxial cable stripping
Automatic tape wrapping
Single-core wire twisting
Airtightness testing with nitrogen
Ribbon cable splitting, tearing, and cutting

Build inputs

Part numbers, fixtures, routing protection

Missing part numbers, no-substitution connectors, unusual routing protection, dedicated fixtures, or project record formats can change the build plan.

Qualified-supplier coordination

Horizontally injection-molded housings requiring horizontal molding machines
PCB assemblies / circuit boards
Specified plug, connector, or component sourcing

Process

From drawing to finished harness

The drawing and BOM drive wire preparation, branch layout, termination, protection, identification, electrical checks, and packing.

1Read harness drawing, BOM
2Prepare cutting, stripping, terminal needs
3Build harness layout, branch routes
4Apply specified labels, sleeves, heat shrink, tape
5Test against drawing requirements

Related routes

Products using harness assembly

Request a quote

Send the harness drawing and BOM

Mark branch lengths, connector and terminal part numbers, labels, protection, test points, and any dedicated fixture requirement.

Start an RFQ