About Us
A Michigan wire harness & assembly manufacturer
Precision, reliability, and full in-house process control.
Our Story
Built to be a reliable manufacturing partner
Harnex Manufacturing is a Michigan-based wire harness and assembly manufacturer. Our mission is to give OEMs and startups a dependable partner who builds wiring systems that perform in the field.
Why Harnex
Built on precision, reliability and control
In-House Engineering
Design-assist and DFM review by the people who will build your product.
Full Process Control
Cutting, crimping, molding, testing and integration all under one roof.
Flexible Volumes
From a single prototype run through full production programs.
Quality at Every Step
Workmanship-standard checks at each station, not just at the end.
Responsive Michigan Team
Real people who answer questions and keep your program moving.