From Concept to Buildable Harness.
Wire harness design services for teams with requirements, schematics, or a product concept that still needs a manufacturable harness package.
MiniProto turns functional requirements into connector selections, wire lists, routing intent, DFM notes, sourcing decisions, and drawings your build team can actually use.
Need an existing assembly documented first? Start with reverse engineering. Already have a build-ready package? Go straight to custom cable assembly.
The Problem
Your Product Needs a Harness, Not Just a Schematic
- Electrical Intent
The schematic shows what connects, but not the connector family, wire gauge, branch length, strain relief, or service loop that makes it buildable.
- Physical Reality
Routing, bend radius, mounting points, abrasion, heat, and operator access decide whether a harness survives the actual machine.
- Supply Chain Gaps
A connector that works on paper can be out of stock, tooling-heavy, too large, or wrong for the environment once sourcing starts.
The Solution
A Harness Package Built for Quoting, Sourcing, and Assembly
Design From Requirements
We translate load, signal, environment, length, routing, and serviceability requirements into a first-pass harness architecture.
DFM Before You Spend
Connector choice, wire type, labeling, sleeving, and branch layout are reviewed for build cost, sourcing risk, and production repeatability.
Direct Path to Build
The design output feeds MiniProto assembly directly, so the same team that flags manufacturability issues can build the first articles.
Design work is scoped before production. We keep NRE visible, separate from build pricing, and point customers to lower-cost paths when the online configurator or a simple build quote is enough.
Pricing
Estimate the Design NRE Before We Scope It
Use this rough calculator for early budgeting. Final pricing depends on documentation quality, complexity, sourcing risk, and how many review cycles are needed.
Requirements Review
Best for a schematic, pin list, or rough concept that needs design scope, missing inputs, and likely NRE called out before deeper work.
Harness Design Package
Covers routing assumptions, connector and wire selection, BOM work, drawings, labeling, sourcing notes, and DFM review.
Build Handoff
Once the package is approved, assembly pricing is quoted separately for prototypes or low-volume production.
Each connector housing. Count both ends of a mated pair separately.
Each individual conductor. A multiconductor cable counts as one wire per conductor inside it, not one for the whole cable.
Each point where two or more wires are joined or branch off.
Each continuous run of sleeving, heatshrink, conduit, or loom.
Rough preliminary estimate
$1,323–$1,789
Rough preliminary estimate only, not a quote. Final pricing depends on full requirements.
Design NRE is quoted separately from build cost.
After the design package is approved, we can quote prototypes or low-volume builds through our Kingston, NY assembly team with 2 weeks manufacturing available for many projects.
Wire Harness Design Capabilities
From Schematic to Sourced Harness BOM
We focus on practical harness design for prototypes, industrial equipment, embedded systems, vehicles, and low-volume production programs.
Schematic-to-Routing Design
DFM Review
Connector and Wire Selection
Sourcing and Build Package
Common Design Applications
Harness design support for teams moving from prototype wiring to repeatable assembly documentation.
Embedded Systems
Board-to-device harnesses for sensors, controllers, displays, batteries, and low-voltage signal wiring.
Industrial Equipment
Machine harnesses for PLCs, actuators, limit switches, motor controls, power distribution, and service panels.
Vehicle and Marine
Harnesses with vibration, abrasion, fluids, temperature, mounting, and field-service constraints.
Robotics and UAVs
Compact, lightweight routing for payloads, motors, cameras, batteries, and modular subsystems.
Wire Harness Design Process
Requirements In, Build-Ready Package Out
The workflow stays practical: enough engineering detail to quote, source, build, test, and revise without turning prototype work into a year-long documentation project.
Our 5-Step Harness Design Workflow
Requirements Intake
We gather schematics, pinouts, enclosure constraints, rough lengths, environmental requirements, current loads, preferred suppliers, and target build quantities.
Schematic and Routing Design
We map circuits to connectors, wires, branches, labels, and routing assumptions so the harness has a clear electrical and physical architecture.
DFM Review
We check manufacturability, crimp tooling, bundle size, branch breakouts, labeling, test approach, serviceability, and common failure points before release.
Connector and Wire Sourcing
We confirm part availability, alternates, lead times, tooling implications, and material tradeoffs before locking the BOM.
Build-Ready Package Delivery
You receive the working package needed for quote, procurement, assembly, and revision control. If MiniProto builds it, that package flows directly into production.
Already have a complete drawing package? Skip design NRE and request a custom cable assembly quote.
Customer Fit
Are We Right for This Design Work?
Good Fit
- You have requirements, a schematic, a pin list, or a working prototype but no build-ready harness package
- You need connector, wire, routing, labeling, sleeving, and sourcing decisions made together
- You want the design to feed directly into prototype or small-batch manufacturing
- You can answer technical questions during the review window, usually within 24-72 hours
Not a Fit
- You already have a released harness drawing, BOM, pinout, and build notes
- You only need a simple point-to-point cable that the online configurator can price
- You need high-volume production engineering, full vehicle E/E architecture, or regulated certification ownership
For simple configurable builds, use the online configurator.
Wire Harness Design FAQ
Common Questions About Harness Design Services
Practical answers about inputs, outputs, sourcing, design ownership, and when to choose design versus assembly.
What do I need to start a wire harness design?
A schematic, pin list, device manuals, photos, rough routing sketch, enclosure CAD, or written requirements are enough to begin. Cleaner inputs reduce review cycles, but the service exists for projects that are not build-ready yet.
Can you design from a physical sample instead?
Yes, but that is usually a reverse-engineering project first. If you need an existing harness documented from a sample, start with reverse engineering, then move into design changes if needed.
What does the final design package include?
Scope varies by project, but typical outputs include connector and wire BOMs, pinouts, wire tables, branch dimensions, routing notes, label requirements, sourcing notes, and assembly/test guidance.
Do you choose the connectors and wire?
Yes. We can recommend connector families, terminals, seals, backshells, wire types, gauges, colors, labels, sleeving, and alternates based on electrical, mechanical, environmental, sourcing, and build constraints.
Can MiniProto build the harness after designing it?
Yes. Most design projects are intended to feed directly into custom cable assembly. Design NRE and manufacturing are quoted separately so you can approve each step.
Is this for high-volume automotive production?
Usually no. MiniProto is strongest for prototypes, lab equipment, industrial machines, robotics, embedded systems, specialty vehicles, and low-volume production where practical design and fast build feedback matter more than high-volume program infrastructure.
Who owns the design files?
The project quote defines deliverables and ownership. For normal customer design work, the goal is to provide a usable package your team can review, revise, source, and build from.
How is design pricing different from assembly pricing?
Design pricing covers engineering time, review cycles, sourcing work, and documentation. Assembly pricing covers materials, labor, testing, and delivery once the package is ready to build.
Ready to Get Started?
Pick the Path That Matches Your Starting Point
Requirements, samples, and build-ready drawings each need a different first step.
Start a Design Quote
Send requirements, schematics, CAD, photos, notes, or a rough concept and we will scope the harness design work.
- Requirements intake
- 24-72 hours review window
- Design NRE scoped up front
Document an Existing Harness
Have a sample but no drawings? Reverse engineering is the right first step before redesign or production.
- Physical sample review
- Connector and pinout documentation
- Design changes after baseline capture
Build a Released Package
If your package is ready, skip design work and quote assembly, testing, and delivery.
- Build-ready drawings and BOMs
- Prototype through low-volume runs
- 2 weeks manufacturing available
Simple harness? The online configurator may be faster. Technical question first? Email support@miniproto.com.