RFQ PLANNING 6 min read
How to Choose a Custom Wire Harness for OEM Equipment
A good wire-harness decision begins with the equipment and installation conditions, then moves through connections, assembly details and the validation path. This checklist gives an OEM team a more useful brief for the first discussion.
Start by describing what the harness must do in the equipment, rather than starting with a connector or a price. The most efficient sourcing discussion gives engineering and production enough context to identify the right wire, terminals, routing and checks.
01
Define the application before the parts.
Record where the harness sits in the equipment, how it is routed, whether it moves in use and which environmental factors matter. Temperature, vibration, moisture, abrasion, bend radius and installation space can all change the practical construction.
For automated equipment, the harness may also need to follow a defined routing path or arrive with labels and protective treatments already fitted. An industrial wire harness reference is useful when that installation context is part of the project.
02
Define every connection, not just the connector family.
List the connector model or acceptable alternative, pinout, wire gauge, length, branches and any terminal requirements. A photo or sample helps when the project has an existing assembly but incomplete drawings.
Connection type should follow the application. For example, an industrial wire harness can be organized around industrial sensing connections, while a cable assembly is a more relevant starting point for RF-style connections. The goal is not to force a catalog item into the job; it is to clarify the reference point for a custom build.
03
Make the assembly and inspection requirements visible.
Write down branch positions, sleeving, heat-shrink, strain relief, labels, tie points and packing needs. If a requirement matters in installation or service, it should appear in the project record instead of living only in an email thread.
Then connect critical characteristics to a validation discussion. The quality control page shows relevant inspection evidence including continuity, pull-force and crimp-profile checks. The final inspection plan should always be agreed for the specific project.
04
Prepare a short RFQ package that engineers can use.
A useful first package can be compact: a drawing, a sample, a connection list, target quantity, requested delivery timing and the conditions above. State what is fixed and what is open for engineering review. That distinction helps avoid treating a preliminary reference as an unchangeable final specification.
When the project is ready for a discussion, use the contact page to send the available information. A complete package is helpful, but it is fine to start with the drawing or sample you have.
COMMON STARTING QUESTIONS
What should an initial RFQ include?
Include the equipment application, drawing or sample, connectors, wire gauge if known, length, branch positions, expected quantity and any relevant operating conditions. Mark unknown items so they can be reviewed instead of guessed.
Should we make a sample first?
For a new design or a changed assembly, an early sample can help align the physical build, installation details and test expectations before a repeat-production decision.