Solutions
Second-Source Cable Assembly and Wire Harness Transfer
A second-source transfer starts with the current drawing, reference sample, BOM, test method, and any parts that may not be substituted. MTTJ uses that controlled package to compare the proposed build with the existing cable assembly or wire harness.
For a cable assembly moving to another supplier
- You have an existing assembly, drawing, reference sample, or supplier package
- A second manufacturing source is needed for risk control or supply continuity
- The project requires careful comparison against the current build and test expectations
- Materials, connectors, or documents must stay unchanged unless your team approves a change
Start with current drawing, BOM, sample, test criteria
- Current drawing, reference sample, or supplier specification
- Existing BOM, connector list, wire or cable requirements, and inspection criteria
- Quantity, annual demand, sample plan, no-substitution items, records, and delivery destination
Transfer control
No-substitution parts and accepted differences
- Drawing-to-sample consistency
- Connector, terminal, wire, cable, label, and packaging equivalency
- Testing and inspection criteria from the existing supplier package
Samples and records
Reference samples, inspection records, change evidence
- Current sample photos and marked differences if known
- Existing inspection records or test criteria
- Specified component list, no-substitution notes, label, packing, and shipment record expectations
Related products
Complex Wire Harness AssembliesComplex harnesses combine several branches, termination types, labels, and protective materials in one assembly. MTTJ cuts and prepares the wires, crimps or solders the specified terminals, lays out the harness, adds protection, and checks circuits and identification against the drawing.Custom Interconnect Cable AssembliesInterconnect cables join specified points inside equipment or between subassemblies. MTTJ builds D-sub, circular-connector, pigtail, terminal-block, and other drawing-based assemblies with the specified pinout, shielding, labels, and checks.Custom Cable AssembliesMTTJ builds drawing-based cable assemblies for power, signal, data, and control connections. In-house work can include cutting, stripping, crimping, soldering, connector assembly, labeling, electrical checks, and packing.
Related capabilities
Continue the review
Related resources and manufacturing scope
Transfer ChecklistA second-source transfer should begin with the current drawing, reference sample, BOM, connector list, no-substitution items, inspection criteria, test method, records, packing, and change-control rules.Supplier EvaluationEvaluate a cable assembly supplier against one controlled build package, not a general capability list. The comparison should cover drawing and BOM fit, in-house and supplier-coordinated work, tooling, tests, records, packing, change control, and the cost inputs needed to deliver the assembly.Supply Chain RiskWire harness supply risk is easier to manage when the drawing, BOM, approved-equivalent rules, tooling, tests, records, packing, and delivery inputs are controlled together. The practical output is a risk register with an owner, evidence, trigger, and response for each assembly-specific dependency.Manufacturing LocationChoose a cable assembly manufacturing location by comparing the complete operating model for the same build: supplier ecosystem, process fit, tooling and validation, transport, total landed inputs, engineering-change response, and continuity. A country label alone does not decide which route fits an assembly.
Transfer quotation
Use the current build as the comparison point
Separate current build requirements from requested improvements
Identify components that cannot be substituted
Provide existing test criteria, record format, and sample needs
FAQ
Second-source transfer
Can MTTJ copy an existing assembly from a sample?
A sample helps reveal construction details, while drawings, material requirements, connector details, and test criteria keep the transfer repeatable.
How should substitutions be handled?
Any material, connector, or process substitution should be documented and accepted by your team before production handoff.
Request a quote
Send the transfer package
Include the current drawing, BOM, reference sample, test criteria, no-substitution parts, and any accepted change.