How to Prepare a Wire Harness RFQ for OEM Manufacturing

A strong RFQ gives an engineering team enough information to assess feasibility, clarify assumptions, and prepare a meaningful quotation.

Start with the latest drawing revision or wiring list. If several revisions are circulating, identify the one that should be used for the quotation so that later changes can be tracked clearly.

Include connector and terminal part numbers whenever they are known. A photograph can help with an early discussion, but the part number and mating interface are more useful for a production review.

Describe the wire or cable construction, including conductor requirements, insulation or jacket expectations, shielding, flexibility, temperature, and any chemical or environmental exposure.

State the expected prototype quantity, annual demand, delivery target, packaging, labeling, and inspection requirements. These details affect how the project should be reviewed and sampled.

If a requirement is not yet confirmed, label it clearly. This avoids incorrect assumptions and makes the quotation process easier to audit.

A useful RFQ does not need to be perfect before it is sent. The purpose of the first review is to identify missing information and agree on the next technical decision.