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Wire Harness Continuity Testing and Pinout Verification Guide

2026-08-08

Wire Harness Continuity Testing and Pinout Verification Guide

Continuity testing and pinout verification help confirm that a wire harness is assembled according to the drawing. These checks are important for prototype samples and production batches.

What Continuity Testing Checks

Continuity testing confirms that the correct circuit path exists between terminals or connector pins. It helps find open circuits, wrong connections and assembly mistakes.

What Pinout Verification Checks

Pinout verification confirms that each wire is installed in the correct cavity according to the drawing or pin table. This is especially important for multi-pin connectors and branch harnesses.

Information Needed for Testing

  • Drawing or pinout table
  • Connector pin numbering reference
  • Required test standard or customer requirement
  • Sample approval and production inspection plan

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