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Guide2 min read

Having a wiring harness rebuilt: from sample to new production

No drawing, no supplier, but a working sample: wiring harnesses can be rebuilt for replacement requirements, small series or classic cars. Here is how that works.

Wiring harness for engine management
From our production: Wiring harness for engine management.

When a rebuild makes sense

  • The original supplier no longer produces the wiring harness
  • There is no drawing, but there is an intact sample
  • Replacement and service requirements in small quantities
  • Restoration of vintage and classic vehicles
  • Revision of an existing wiring harness with new components

How a rebuild works

  • Analysing the sample: cable types, colours, cross sections, lengths, branch dimensions, pin assignment, protection
  • Preparing the documents: drawing, bill of materials and pin assignment plan
  • Procuring the components: original or equivalent, agreed with you
  • Building a sample and checking it against the original
  • Release and production in the quantity you need

The rebuild produces production documents that remain available to you later. That turns a one off job into a repeatable delivery.

When original parts are no longer available

With older vehicles and machines in particular, connectors or cables have often been discontinued. In that case we look for equivalent alternatives that fit mechanically and electrically, and we agree them with you before we produce. Where appearance matters, with classic cars for example, we pay attention to matching colours and protective materials.

What we need from you

  • The sample, or clear photos and dimensions
  • Intended use and environment
  • Quantity and target date
  • Any existing documents, even if they are incomplete

We build wiring harnesses from a sample as a single piece, a small series or series production, for classic cars such as the VW Golf 1. More under Wiring harness manufacturing.

FAQ

Answered briefly.

Can a wiring harness be rebuilt without a drawing?

Yes, if a sample is available. Cables, lengths, branches and pin assignment are recorded from the sample, and the drawing and the bill of materials are created from that.

Do you also rebuild wiring harnesses for classic cars?

Yes. We reconstruct wiring harnesses from a sample as a single piece or a small series, for classic cars such as the VW Golf 1.

What happens to the sample?

The sample serves as the reference for analysis and testing. We agree with you before the project starts how it is handled afterwards.