World Class

Wire Harness Manufacturer

Specializing in Electrical Wire & Cable Harnesses and Electromechanical Assemblies

Custom Interface
On-Time-Deliveries (OTD)

88% YTD

Custom Interface
Manufacturing Quality Rating

99.53% YTD


Turn-key cable or electromechanical assembly, manufacturing expertise and robust supply-chain management.
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Our 45,000 square foot facility provides the space to support our existing and future customers.
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Effective training programs & a stable, talented workforce have led to a track record of meeting customer needs.
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Since 1997, Custom Interface, Inc., has been a world class contract manufacturer focused on building custom wire/cable harnesses, and integrating those harnesses into complex electromechanical assemblies for test and measurement , renewable energy, medical, aerospace, and defense applications.

We specialize in helping our customers develop robust wire harness and cable interconnect solutions, whether it be for life-saving medical equipment, mission-critical systems for our troops abroad, or “cannot fail” equipment that operates in harsh environments.


Rapid Prototyping

Interested in Rapid Wire Harness and Electromechanical Subassembly Prototyping?

Try our new Rapid Prototyping & Development service.

We can take your rough sketch to a tested prototype within one week of materials being available. Get your idea turned into an AS9100-quality engineering sample without the added time and expense of a full AS9102 First Article process.  



Researching & Selecting the Best Wire Harness Manufacturer

Like any other industry, wire harness manufacturers must exhibit technical expertise, customer service skills, and industry experience to stand out as leaders in their field.

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The Importance of Value-Added Engineering for Manufacturers

Manufacturers getting ready to build new products will often ask their subcontractors to assess how to improve or add functionalities, reduce manufacturing costs/material lead time and improve durability. The term value-added engineering evolved as this became a standard process in new product...

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Custom Interface Hosting PNDC Pints & Professionals Networking Happy Hour

Custom Interface is hosting one of the premier networking events in the Pacific Northwest! Join us for Pints & Professionals on June 13th, 2023 from 4-6 pm.

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Best Practices in Client Relationship Management

Best Practices in Client Relationship Management

Managing and improving client relationships is the foundation of any business. Client relationship management refers to any actions your organization takes to coordinate its interactions with current and potential clients. But do you really need a...

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How to Train to a Higher Standard in Manufacturing

How to Train to a Higher Standard in Manufacturing

Running an efficient, productive, and profitable manufacturing business in today’s environment is no simple task. While your equipment and input need to be top-notch, you won’t get the results you need without high-quality talent on your team. 

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What our customers say

I’m so glad we received the Custom Interface cable assemblies so quickly for our aerospace program. These are priority items for our customer so we’re likely to ship them ahead of schedule.

L. Nevin
Senior Program Manager

From start-up to Fortune 1000, Custom Interface deserves consideration for any supply chain….

R. Anderson

They are especially proficient at providing guidance with cable designs to insure quality and reliability at the least possible cost.

B. Fritchie