Wire Harness, Cable & Electromechanical Assembly worked example

Wire Harness Cost at 61% labor efficiency factor: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop labor efficiency factor to 61%, then walk the calculation through step by step. Estimate the fully loaded cost to build one wire harness from bench assembly time, labor rate and bill-of-material adders.

The inputs for this scenario

  • Assembly Build Time: 45 min (held at the documented default)
  • Fully Loaded Labor Rate: 0.85 $/min (held at the documented default)
  • Labor Efficiency Factor: 61 % (the input this scenario stresses; the baseline uses 85)
  • Materials and Overhead Adder: 32 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total = build time x labor rate x labor efficiency% + materials and overhead.
  • Total wire harness cost works out to 55.33 $ at these inputs, and this is the headline figure for the scenario.
  • Wire harness cost per unit works out to 1.23 $ / piece at these inputs.
  • Variable wire harness cost works out to 23.33 $ at these inputs.
  • Fixed wire harness cost adder works out to 32 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where labor efficiency factor sits at 85% and the headline result is 64.51 $, this scenario comes in 14.23% below the baseline at 55.33 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to labor efficiency factor, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It models one representative build; it doesn't capture learning-curve effects across a production run or scrap from failed continuity tests.

Results at a glance

  • Total wire harness cost: 55.33 $ (headline result)
  • Wire harness cost per unit: 1.23 $ / piece
  • Variable wire harness cost: 23.33 $
  • Fixed wire harness cost adder: 32 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Wire Harness Cost calculator, set labor efficiency factor to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.