Custom Wire Harness Assemblies for Automotive Test, Aerospace and Defense Programs
K-Tec Systems designs and builds custom wire harnesses in Ferndale, Michigan, for automotive test equipment, aerospace instrumentation, defense systems, UAS propulsion and medical devices. Assemblies are built to IPC/WHMA-A-620 and, where specified, U.S. MIL-SPEC. We handle design, 2D and 3D wiring diagrams, prototyping, production, electrical testing and documentation in-house, and ship a Certificate of Conformance with every order.
Request a QuoteOverview
A wire harness routes power and signal through a defined space and has to keep doing it under heat, vibration, EMI and repeated handling. We engineer each assembly to the operating environment, routing constraints, connector requirements and workmanship standard your program specifies, then build it to print with the documentation your incoming inspection and procurement teams need.
K-Tec Systems offers end-to-end wire harness services, from design consultation and prototyping through full-volume production and testing. We work directly with engineers and procurement teams to produce wire harnesses that meet your exact specifications. All wire harnesses are made in the USA at our Ferndale, Michigan, facility.

Capabilities
Wire Harness Manufacturing Capabilities
Since 1989, K-Tec Systems has built reliable, custom wire harness assemblies using quality materials selected to withstand the operating conditions of your specific application — including extreme temperatures, high vibration, confined routing paths, and electromagnetic interference requirements.
Process
How We Build a Wire Harness
Design review
We work from your drawing, sample or schematic and produce a 2D or 3D wiring diagram for approval.
Prototype
A first article is built and tested before production.
Cut, strip, terminate and route
Conductors are cut to length, terminated with mil-spec or commercial connectors, and dressed with sleeving, conduit or heat-shrink as specified.
Test
Every assembly is continuity-tested and electrically verified before it ships.
Document and ship
Certificate of Conformance and QR-coded product documentation with every order.
Quality
Quality Standards: IPC/WHMA-A-620 and MIL-SPEC
Wire harness quality is not an afterthought at K-Tec Systems. Every assembly is manufactured and inspected to meet industry-recognized standards, with documentation provided for traceability and compliance.
IPC/WHMA-A-620
The industry-recognized acceptability standard for cable and wire harness assemblies. K-Tec builds to IPC/WHMA-A-620 requirements, ensuring consistent workmanship across every assembly.
MIL-SPEC Compliance
Wire harnesses for defense and military applications are built to U.S. MIL-SPEC standards, meeting the material, construction, and performance requirements specified for military use.
Certificate of Conformance
Provided with every order to support your incoming inspection, qualification, and supply chain documentation requirements.
WBENC / WOSB Certified
K-Tec Systems is a certified woman-owned business recognized by the Women’s Business Enterprise National Council (WBENC).
Government Registered
Registered to do business with the U.S. Government. CAGE Code: 4W0S0. SBA Small Business designation.
Defense
Wire Harnesses for Defense and Military Programs
K-Tec Systems builds custom wire harness assemblies for defense and military equipment in Ferndale, Michigan. Assemblies are built to U.S. MIL-SPEC requirements where your drawing or contract specifies them, and to IPC/WHMA-A-620 workmanship criteria.
Defense harnesses are defined by the program, not chosen from a catalog. Connector family, wire and cable type, shielding, sleeving and marking are called out on the print, and the assembly has to hold up to vibration, temperature extremes, moisture and EMI. We build to your print and can provide 2D and 3D wiring diagrams for approval before first article.
For procurement, K-Tec Systems holds CAGE Code 4W0S0 and is registered to do business with the U.S. Government. A Certificate of Conformance ships with every order.
Send your drawing and the applicable specification for a quote or engineering review. See more about how we support defense and government programs.
Procurement Details
- CAGE Code: 4W0S0
- Registered to do business with the U.S. Government
- Built to MIL-SPEC where your drawing or contract specifies
- Certificate of Conformance with every order
Applications
Industries We Serve
Defense & Military
K-Tec manufactures wire harnesses to U.S. MIL-SPEC standards for military ground vehicles, fire trucks, ambulances, command and control systems, and support equipment. Our defense wire harnesses are built for reliability under harsh field conditions and are backed by full documentation for procurement compliance. K-Tec is registered to do business with the U.S. Government (CAGE Code: 4W0S0).
Aerospace
Custom wire harness assemblies for aerospace platforms where weight, routing space, and signal integrity are critical. K-Tec works with engineers to specify materials, connectors, and construction methods appropriate for the altitude, vibration, and thermal environment of each application.
Drone & Unmanned Systems (UAS/UAV)
Wire harnesses for unmanned aerial systems require compact, lightweight construction without compromising reliability. K-Tec manufactures wire harnesses for UAS propulsion and engine systems, where precision wiring and secure terminations directly affect system performance and mission success. As the drone industry continues to expand across defense, commercial, and research sectors, K-Tec is positioned to support wire harness requirements for next-generation unmanned platforms.
Automotive
Wire harnesses for taillight assemblies, rear-view camera systems, EV and hybrid battery systems, onboard electronics, and automotive brake and engine test equipment. K-Tec has extensive experience with the complex wiring demands of electric vehicle powertrain and energy storage systems. Test-cell and dynamometer harnesses are built alongside the thermocouples they connect to, so sensor lead, connector and harness are matched before they reach your lab.
Medical
Wire harnesses for portable medical treatment devices and health monitoring equipment, manufactured to the high reliability and quality documentation standards required for medical applications.
Industrial & Electronics
Wire harnesses for electric panels, communications devices, and control systems, custom manufactured to meet the quality and reliability needs of the application.
Components
Materials & Components
K-Tec sources and works with a comprehensive range of wire harness components, selected based on the operating environment, regulatory requirements, and performance specifications of each application.

Single Source
Wire Harness and Temperature Sensor from a Single Source
Many applications require both a wiring assembly and a temperature sensing solution. When those two components come from different suppliers, engineers face added complexity in procurement, lead time management, and ensuring compatibility between the sensor and the wiring it connects to.
K-Tec Systems manufactures custom thermocouples and RTDs in-house at the same Ferndale, Michigan, facility where we build our wire harnesses. That means one engineering team, one point of contact, and one qualified supplier accountable for both. Whether your application is in automotive engine testing, aerospace, defense, medical devices, or drone and unmanned systems, K-Tec can support the full wiring and sensing requirements from a single source.
Learn more about K-Tec’s custom thermocouple and RTD manufacturing.
FAQ
Frequently Asked Questions
K-Tec manufactures wire harnesses for aerospace, defense and military, automotive, drone and unmanned systems, medical, and industrial/electronics applications. Our engineering team is experienced with the specific performance and documentation requirements of each sector.
Yes. K-Tec manufactures wire harnesses for military and defense applications to U.S. MIL-SPEC standards. We are registered to do business with the U.S. Government (CAGE Code: 4W0S0).
K-Tec builds wire harnesses to IPC/WHMA-A-620, the industry-recognized acceptability standard for cable and wire harness assemblies. A Certificate of Conformance is provided with every order.
Yes. K-Tec manufactures wire harnesses for drone and unmanned aerial system (UAS/UAV) propulsion and engine systems. Our wire harness assemblies for unmanned platforms are built for compact, lightweight construction with the reliability that mission-critical applications demand.
K-Tec supports both. We work with customers from early-stage prototype through full production runs, with engineering support available throughout the process.
Lead time varies by complexity, materials, and volume. Contact our engineering team with your specifications for a lead time estimate.
Yes. K-Tec Systems manufactures custom wire harnesses and custom thermocouples and RTDs, giving engineers and procurement teams a single source for both the wiring assembly and the temperature sensing solution it connects to.
Contact our engineering team to discuss your application requirements and request a quote. Call 248-414-4100, or reach us at contact@k-tecsystems.com.
IPC/WHMA-A-620 is the industry acceptability standard for cable and wire harness assemblies. It defines workmanship criteria for terminations, crimps, splices, routing and labeling. K-Tec Systems builds to IPC/WHMA-A-620 requirements and can build to customer-specified classes on request.
Yes. Every K-Tec Systems wire harness is designed and built at our facility in Ferndale, Michigan.
Request a Quote or Engineering Review
K-Tec Systems designs and builds custom wire harness assemblies in Ferndale, Michigan. Send your drawing, schematic or sample, along with connector and wire specifications, quantity and applicable standard, and our engineering team will review your requirements.
Contact K-Tec Systems