Which are you? Pick one and the page tailors itself.
Catch the pin‑to‑pin error before your best builder does.
FX Harness Checker cross-checks every pinout against its drawing and shows each problem highlighted on the page it came from. Your skilled people confirm instead of hunt.
Built to run offline on your own machine, or in a secure private cloud · Works with the pinouts and PDFs you already have · Free 30-minute review
The real problem
Your shop does not have a checking problem. It has a people problem.
See it working
Every finding arrives with its evidence
The drawing and the spreadsheet, cropped and highlighted. Your checker confirms or rejects it at a glance.
Suggested fix

Ten checks a skilled checker does by hand. In seconds.
Your pinout and your drawing
Excel, CSV or PDF tables, plus the vector PDF. Your column layout is mapped once and remembered.
Pinout against drawing
Pin-to-pin, destinations, gauge, colour, designators, part numbers, cavities, BOM, wire tables, revisions.
A person signs it off
Each finding has evidence and a suggested fix. Mark it correct or a false alarm, and the rules improve.
Fair questions
What builders ask before they say yes
- Will it work with our designs?
- It works with the formats you already use. No rip and replace, no new system to learn. We start from your existing pinouts and drawings.
- Our data is messy.
- Messy is normal. The first step is a data audit that turns what you have into something usable. We need a starting point, not perfect data.
- Where do our drawings go?
- Your choice. It is built to run offline on your own machine, or in a private cloud set up for you alone. Either way, nothing is shared, used to train models or seen by other clients. NDA before we see a file.
- We already have people who check.
- Having people is not the same as having a system. People get sick, leave and bottleneck at peak. This takes the first pass off them so they confirm instead of hunt.
- We can't risk a trial on a live job.
- A small paid pilot on up to 3 jobs you choose, run alongside your normal checks. You see the result on real work before you commit.
- Does it approve designs?
- No. It flags, your engineer decides. Sign-off always stays with your team.
Is it worth it?
Work it out with your own numbers
Move the sliders to match your shop. The figures update as you go.
The starting figures are examples. Change them to yours. This is your estimate, not a promise. The paid pilot measures the real figure on your own jobs.
Pricing
One fixed price, set after we see your process
Installs start from £5,000. The price depends on your formats, rules and how many people use it, and is fixed in writing before you commit. Compare it with the cost of one missed deadline or one harness built wrong, or work it out with your own numbers.
- 1Process review30 minutes, one to one. Is it a fit out of the box, or with changes?Free
- 2ProposalTime and cost estimate, and the gains you can expect, in writing.Free
- 3Paid pilotUp to 3 real jobs with your chosen team, supported in person or remotely. The pilot fee comes off the install price if you go ahead within 30 days.£1,000
- 4Install and handoverSet up for your drawings and rules. Video onboarding and support.From £5,000
Who builds it
Built by an electrical design manager, not a software salesman
Neil Barker was Electrical Design Group Manager at Red Bull Advanced Technologies, mainly on the RB17 hypercar project, and before that an electrical race systems engineer at Red Bull Racing. He builds and installs every FX Harness Checker himself, for harness shops and for design offices in automotive, motorsport, marine and defence.
Find out in 30 minutes whether it fits your shop
Free and no obligation. Bring one pinout and its drawing. We map your process and tell you straight whether this will help.
Book a free 30-minute process reviewPick a time that suits you. Opens Calendly in a new tab.