Wire Harness Assembly Labor Time Calculator
Most harness shops quote labor from a count of operations rather than a stopwatch on every new part. This calculator turns your wire, crimp, insertion, splice and tie counts into standard minutes, applies efficiency and a complexity factor, and spreads setup across the lot.
Your numbers
Count of individual wire cuts, each stripped at both ends.
Usually two per wire, fewer if some ends are soldered or spliced.
Includes connector seals, wedges and locks where fitted.
Wire markers, cable ties, braid ends, convoluted tubing cuts and mounting clips.
Performance versus standard after fatigue, delays and personal allowance.
Wire cutter changeover, applicator swaps, board layup, first-article time.
Your results
Embedded default times (6 s per machine-cut wire, 7 s per crimp, 6 s per insertion, 45 s per splice, 10 s per label or tie, 90 s fixed handling and test per harness) are illustrative starting values. Replace them with your own time study or MTM-style standards before quoting.
Labor cost per harness vs lot quantity
Sweeps Lot quantity from 1 to 500, holding your other inputs fixed.
Compare estimated and actual harness minutes from your ERP
Optional: we can review how your routing standards line up with actual labor reported against harness work orders.
Optional. The tool and every export work without this. No spam.
How to use the calculator
Count operations straight from the drawing or BOM: one cut-and-strip per wire, one crimp per crimped end, one insertion per terminal placed in a cavity, plus splices and mechanical operations. Set the complexity factor for density and gauge mix, enter the efficiency your floor actually achieves, and enter the burdened rate. The result shows run minutes per harness, hours including setup, labor cost per unit and the whole lot in hours.
- Count crimps and inserts separately, because one terminal needs both
- Use the same efficiency you measure in your labor reporting, not the target
- Include board layup and routing time in the fixed handling element
- Enter setup as the hours that are not repeated per unit
The method behind it
This is a classic predetermined-standard build-up. Standard time per harness equals the sum of (operation count times standard seconds per operation) plus fixed handling, multiplied by a complexity factor. Allowed time divides by efficiency, because a floor running at 85 percent needs 1 / 0.85 times the standard minutes. Labor cost per unit is allowed hours plus setup divided by lot size, multiplied by the burdened rate. Setup amortization is why the chart falls steeply at low quantities and flattens near the run-time cost.
Reading the result and the chart
Compare run minutes per harness with what your routing and ERP labor reporting show for similar parts. A big gap usually means the default standards do not match your equipment: a semi-automatic wire processor shortens cut and strip, while hand cutting lengthens it. The chart shows how much of the unit cost is setup. If cost per unit at 25 pieces is double the cost at 500, quote minimum lot pricing or price breaks rather than a single flat unit price.
Common mistakes
Quoting from drawing wire count and forgetting that twisted pairs, shields and drain wires add operations. Ignoring labor for inspection, electrical test and rework, which many shops carry in overhead instead. Using 100 percent efficiency, which no floor sustains. Counting seals and wedges as free. Finally, reusing the standards from a simple 8-wire harness on a 150-circuit military build, where routing, tie-down and documentation dominate.
Frequently Asked Questions
What time standards should I use for crimping?
Use a time study of your own presses and applicators. Semi-automatic bench crimping with a foot pedal commonly runs several seconds per crimp including handling, while hand tools take longer. The 7 second default is a placeholder for a semi-automatic bench, not an industry standard.
Does this include electrical test time?
Only through the fixed handling element, which defaults to 90 seconds per harness. Long continuity or hipot test sequences should be added as their own time. Many shops also route test as a separate operation with a different labor rate.
How is efficiency applied?
Allowed time equals standard time divided by efficiency. At 85 percent efficiency, a harness with 10 standard minutes needs about 11.8 allowed minutes. It is not a markup on labor cost, it reflects real output versus the standard.
Why does setup matter so much at low volumes?
Setup hours are fixed per lot, so cost per harness includes setup divided by quantity. A 3 hour setup on 10 harnesses adds 18 minutes to each unit, but only about 2 minutes each on 100 units.
If your ERP already holds routing standards and labor transactions for harness work orders, we can help surface estimated versus actual minutes by part family so quotes calibrate against real history.
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Guides
- Wire Harness Labor Time Standards: Building and Tuning Your OwnHow to build labor time standards for wire harness and cable assembly: operation-level times, setup vs run, complexity factors, and tuning from actual job data.
- ERP for Cable Assembly and Wire Harness Manufacturers: What to RequireWhat a cable assembly or wire harness shop needs from ERP: BOM by drawing revision, wire by the foot, lot traceability, kitting, and test records.
- How to Quote a Wire Harness From a Customer DrawingStep-by-step wire harness quoting: read the drawing, build the BOM, price wire and connectors, time every termination, and add NRE, test and scrap.
Manufacturing hubs
- WHMA and wire harness manufacturing: the A-620 standard, harness BOMs and the ERP problems that followWHMA and wire harness manufacturing: IPC/WHMA-A-620, crimp and cable assembly requirements, and the ERP, BOM and private AI issues harness shops face.
- IPC and its standards: what electronics manufacturers need to know, and the ERP and data work behind themIPC standards explained for electronics manufacturers: IPC-A-610, J-STD-001, IPC-6012 and IPC/WHMA-A-620, plus the ERP, traceability and private AI issues EMS shops face.