The electrical test bench stops being an island

Every harness goes through an electrical test bench that verifies continuity, shorts, terminal position assurance, component presence and, where it applies, high voltage. The bench knows everything worth knowing about that harness. And in many plants its knowledge ends on a printed ticket stapled to the harness and a counter someone writes down. The bench is not old: it is modern and it has an interface. It is isolated because nobody has had time to integrate it properly.

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Electrical test bench for harnesses with a harness connected and the results screen, next to the operator launching the test at an automotive plant
The problem

The bench is not old. It is isolated because there was never time to integrate it properly.

And in many plants its knowledge ends on a printed ticket stapled to the harness and a counter someone writes down. The bench is not old: it is modern and it has an interface. It is isolated because nobody has had time to integrate it properly. The test result is the harness conformity evidence, and it is the first thing the customer asks for when there is a problem on their line. If it lives in tickets and manual counters, proving that one specific harness passed test, and with what readings, becomes an archaeological exercise.

  • The test result is the harness's conformity evidence, and it is the first thing the customer asks for when there is a problem on their line.
  • In many plants its knowledge ends on a printed ticket stapled to the harness and a counter somebody writes down.
  • Proving that a specific harness passed the test, and with what measurements, becomes archaeology.
  • And the patterns — which cavity repeats, on which board, after which changeover — are never visible, because there is no historical series to look at.
How it fits the IRIS system

Connect stitches two modern systems by interface, replacing neither.

Connect stitches two modern systems through their interfaces, replacing neither. Every test result, harness, part number, readings, verdict, retries and the operator who launched it, travels automatically into the execution system and stays linked to the traceability Connect already built upstream. And on top of that history, the agents start reading patterns that are invisible today: which cavity repeats, on which board, on which shift, after which part number changeover. You move from knowing how many passed to knowing exactly which one passed and with what reading.

You go from knowing how many passed to knowing exactly which one passed and with what measurement. And over that historical series, the agents start reading patterns that are invisible today.

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Before and after

The test result, before and after

AspectTodayWith iLEAN Connect
Where the result livesA ticket stapled to the harnessIn the system, tied to the harness
What you know about the shiftHow many passedWhich one passed, with what measurements
Answering a claimDays of searchingMinutes
Retries and who launched the testNot recordedPart of the record
Failure patterns by cavityInvisibleVisible over the historical series
Does the bench have to be replacedNo: it is stitched by interface

see the impact section; the attached pool details the before and after for this case.

Impact estimate

Impact estimate — to validate against your numbers.

The block below is an estimate to be validated against your plant's actual data. We put it forward so the committee has an order of magnitude; we refine it during the assessment.

  • Estimated payback 4-8 months, from eliminating transcription.
  • Answering a customer claim in minutes instead of days.
  • Failure patterns by cavity, board and shift, which today cannot even be asked about.
  • The test result ends up tied to the traceability Connect already built upstream: one chain, not a loose figure.

Estimated payback 4-8 months · complaint response in minutes and failure patterns made visible Estimated payback four to eight months through eliminated transcription, customer complaint response in minutes instead of days, and early detection of repeating failures. An estimate to validate, and it is worth confirming first that the installed benches expose an interface or a results file.

And the fair question from the production manager

"Our bench is from a maker who does not support integrations." — that happens often and does not block it: if there is an interface it is used, and if there is not, the results screen is read the same way a crimp press panel is read, which is an anchored task [1]. What is never done is touching the bench internally or altering its certification.

[1] OpenAI paper "Why Language Models Hallucinate", 2025 — on the reliability of AI in anchored tasks.

Frequently asked questions

What people ask about integrating the test bench

Does the bench have to be recertified?

No. Neither the equipment nor its test program is modified: what it already produces is read. That is the condition for this case to be viable in automotive.

What is stored from each test?

Harness, part number, measurements, verdict, retries and who launched it. Retries are the figure that surprises people most once it becomes visible, because it reveals boards that are running tight.

Does it work if we have benches from different makers?

Yes, and that is the usual scenario. Each bench is stitched its own way, but the record reaching the system has the same shape, which is what makes benches comparable.

Does this replace our plant execution system?

No, it feeds it. Connect is not another execution system: it is there so the one you already have receives the data that today stays on the bench.

When do the patterns start to show?

As soon as there are a few weeks of series. The first ones are usually repeat cavities and retries after a changeover, and both point at concrete causes.

Let's talk

Tell us how long it takes you today to prove that one specific harness passed the test.

We work on your plant's real data, not ours. Assessment with no commitment.

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