Cable and Assembly.
One Supplier. One Engineering Team.

When you use a cable manufacturer and a separate assembly house instead of a single cable assembly manufacturer, the interface between them is yours to manage. When something fails: an incoming inspection reject, a field failure, a tolerance problem that appeared on the third shipment. Both suppliers have a defensible explanation. The root cause investigation lands on your team. And when your supplier stops responding, the problem gets worse every day you cannot get an answer.

Abstract blue connection design icon

We engineer the cable and build the assembly in the same facility in Spencer, MA. The same engineers who design your cable build the assembly that uses it. One point of contact. One accountability. One program from prototype through production. See how our cable and assembly process works.

The Problem With Two Suppliers

Most cable assembly programs split across two vendors: a cable house that manufactures the cable and an assembly shop that receives it and builds to the drawing. Neither supplier designed around the other. Neither owns the interface.

The cable was built to a spec. The assembly was built to a drawing. When the two meet in your incoming inspection, or in the field, that is where the gaps show up.

A connector-to-cable interface designed separately from the cable geometry. An overmold specified without knowing the actual cable jacket material. A flex life test that passed on the cable but failed on the assembly. These are not manufacturing failures. They are design failures that happen when the cable and assembly are not engineered together.

We start with the application. We design the cable and the assembly as a system. The result performs the first time because the people who built it understood the full picture before they started. Read how to evaluate a cable assembly manufacturer before you issue your next RFQ.

What We Build

We produce complete cable assemblies for OEM engineers and system integrators across demanding industries:

  •  Cable engineering and manufacturing in-house in Spencer, MA
  • Connector selection matched to the application environment
  • Termination, soldering, and crimping to documented workmanship standards
  • Overmolding and potting for strain relief and environmental protection
  • Wire harness construction
  • In-house electrical test and documentation
  • Short-run prototyping through full production volume
  • Kanban inventory and scheduled release for repeating orders

For customers on just-in-time schedules, we have shipped assemblies with one-day lead time. Kanban inventory means your product is staged and ready before your line calls for it. You carry less inventory liability. We hold the buffer.

We serve geotechnical and push cable programs, underwater and subsea applications, emergency and obstruction lighting, military and defense, robotics and industrial automation, environmental monitoring, non-invasive medical, aerospace, and pipeline inspection.

Spencer, MA. U.S. Manufacturer Since 1967
Cable and Assembly Under One Roof
Direct Engineer Access. No Sales Layer.
Kanban Replenishment. Predictable Delivery.

What Our Customers Say About Working With Us

Water Quality Monitoring OEM

Was sourcing cable from one supplier and assemblies from another. Quality inconsistencies were creating incoming inspection problems across product lines used by government agencies and environmental researchers. We consolidated both under one roof, built a proprietary flex test rig, and grew the program to more than 15 cable and assembly families over 15 years.

Life-Safety Equipment Manufacturer

Ran out of floor space and assembly labor after COVID. Engineers were spending time on assembly work instead of R&D. We set up a dedicated assembly line at our facility, caught a regulatory compliance issue in the design before production started, and removed the assembly load from their floor entirely.

Industrial Equipment Manufacturer

Was managing assembly in-house with 13 product families, constrained by space and labor cost. We took over the full assembly operation, scaled to 23+ product families, and reduced fulfillment to 24 hours from receipt.

cable assembly manufacturer holding assemblies

Why Engineers Work With Mercury Wire

Direct Engineer Access

You talk to the engineers doing the work. Not a quoting desk. Not customer service. The same engineer who designed your assembly takes your call when you have a question six months into production.

Repeatable Production Programs

We align delivery schedules to your actual inventory needs: same day, weekly, monthly, or on a Kanban release. As your program scales, the process scales with it. The same team that built your prototype runs your production.

Tell Us About Your Assembly Program

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