A wire harness can only be built as well as it is documented. Before you send a harness for quotation, check that your drawing answers these questions.
Wires and cables
- Wire gauge, insulation type, and color for every conductor
- Cut lengths, with tolerances, measured between clearly marked points
- Twisted pairs, shielding, and where shields are terminated
Connectors and terminations
- Manufacturer part numbers for every connector, terminal, and seal
- A pinout table: which wire goes to which cavity at each end
- Sealing requirements, for example an IP67 rating
Routing and protection
- Branch points and breakout lengths
- Sleeving, tape, heat shrink, or conduit, and where each one starts and stops
- Labels: text, position, and orientation
Quality and test
- The workmanship class required under IPC-A-620
- Electrical tests to perform, such as continuity on every circuit
- Any pull-force requirements on crimps
If you do not have a drawing yet, send us a sketch and the connector part numbers. Our engineers can help with connector selection, sealing, and routing, and produce the drawing with you.
Leave a Reply