Greystar Electronics Smart. Agile. responsive.

At Greystar Electronics, we build precision cable assemblies, wire harnesses, and circuit board assemblies for the commercial, military and avionics industries.

Precision. Quality. Performance.

We have proven expertise creating precision electronic cable assemblies, wire harnesses, and circuit board assemblies. We welcome the opportunity to discuss your product needs and demonstrate our capabilities.

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Quality Assurance Process

Product-specific quality assurance process.

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Fast and accurate responses to quotes and orders.

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Custom Fabrication

Custom in-house fabrication of all cable assemblies and wiring harnessess.

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Quality Assurance Certification

Quality Assurance manual and systems written to requirements of ISO 9001:2000 + AS9100D.

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We are able to work on custom orders with a fast turnaround.

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Competitive Pricing

Our pricing is some of the most competitive, especially considering our level of  hand crafted quality.

Unwavering Commitment

Our unwavering commitment at GreyStar Electronics is to supply you with the highest-quality products to serve your unique electrical performance demands. We build every product by hand, test each one individually, and deliver only those that meet our exceedingly rigid quality standards.


We serve commercial, military, and avionics clients – clients who demand that every component be built precisely and perform flawlessly, long-term. Those are exactly the types of components we create at GreyStar Electronics.


We have proven expertise creating precision electronic cable, harness, and circuit board assemblies. And we’d like to discuss what we can create for you.


Take a look at our process for providing you with the electronics components you need.


We create components specifically for you and your exacting specifications.

Instead of amassing inventory of mass-produced components, we treat each of your product needs as a unique and individual project. You provide us with specifications and your performance and durability goals. Our engineers and manufacturing specialists will meet with you to learn every detail about your needs and applications. They will design a production plan, select premium materials, oversee production, develop a demanding and specialized quality assurance process, and then deliver proven, premium components.


No mass production process can match our hand-built approach.

Using only premium materials that ensure the highest performance, we build your components and systems – by hand. Our highly skilled production team members work with our engineers and manufacturing specialists and hand-build each of your components individually. Special requests or assembly needs? No problem since we are hands-on with every component we create for you. Potential assembly flaws or quality concerns? Our specialists identify them in real time and ensure every potential issue is remedied before a product leaves their hands.

For each project we execute, each of our Assemblers receives an Assembly Instruction Manual prepared by the Quality Assurance Team and approved by the Manufacturing Manager.


We develop a unique quality assurance plan for each of your components.

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As unique as our hand-made production approach is, so is our product-specific quality assurance process.

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Rather than utilizing standard testing methods, we develop a specialized quality assurance plan for each product and component we make. Our engineers and quality specialists utilize advanced test equipment to measure and verify every product’s specific performance. They also certify each component’s reliability and durability so you can rest assured it will deliver the premium performance you demand.

We operate using a Quality Assurance Manual and systems written to meet or surpass the requirements of ISO 9001:2000 + AS9100D.


We have vast and varied experience creating precision electrical componentry.

Cable Assembly

Cable Assemblies

Wire Harnesses

Wire Harnesses

Circuit Board

Circuit Board Assemblies

We have a wealth of experience producing electronics cable, harness, circuit card assemblies, and breakout box assemblies. And our Electro Mechanical Assemblies services include:
• Conformal Coating
• Reverse Engineering
• Custom Built Fixtures
• Silk Screening
• Brazing


When a former federal secret security agent invented a sophisticated security device called the POSSE (Point of Sale Security Examiner) currently used in numerous airports and other secured facilities, he contracted with GreyStar Electronics to manufacture these POSSE units The patented device can instantly identify the presence or absence of security elements of ID cards, currency, checks, money orders, and credit cards.

GreyStar was instrumental in advising on the final design, as well as providing manufacturing services, allowing the POSSE unit to deliver consistently outstanding performance.

Here are a few examples of what we can do for you

Click on a photo below to launch into a gallery of just some of what we do for our clients.



Primary Electronic Assembly  334418
Secondary Engineering Service 541330
Circuit Card Assemblies 334412
Electronic Chronometers 334518
Communication Equipment (NEC) 334290
Communications Equipment 334220
Navigation, Nautical Systems 334511
Wiring Fabrications, Miscellaneous 332618
Wiring Harnesses 335931


At GreyStar Electronics, we carry certifications from sources including:

• State of Minnesota
• Washington Metropolitan Area Transit Authority
• SDB Certification
• ISO 9001:2000 + AS9100D


Some of our current and past clients include:

  • Rockwell Collins; Boeing, Lockheed Martin, Air France, and Embraer
  • Cirrus Design Corporation, Duluth, Minn.
  • Federal Aviation Administration, Washington, D.C.
  • Association of American Railroads, Washington, D.C.
  • Naval Weapons Center, China Lake, Calif.
  • Micro Dynamics Corporation, Eden Prairie, Minn.
  • U.S. Coast Guard, Washington, D.C.
  • Goodrich Sensor Systems/Rosemount
  • Aerospace, Inc., Burnsville, Minn.
  • U.S. Army Tank Command, Rock Island, Ill.
Cirrus Aircraft
Association of American Railroads
U.S. Army Tank Command
Collins Aerospace
Naval Weapons Center
U.S. Coast Guard
Micro Dynamics


We are as unique as every product we create for you.

Founded in 1993, GreyStar Electronics, Inc., is a woman- and Native American-owned company that operates as a small disadvantaged business (SDB).

GreyStar Electronics, Inc., is a member of the Minnesota Minority Supplier Development Council, as well as a member of:

  • Minnesota American Indian Chamber of Commerce
  • National Association of Professional Executive Women
  • The Airbrake Association, Inc.
NMSDC Logo 150
napw 150
air brakes


Our mission at Greystar Electronics is to be an industry leader by producing the highest-quality products while delivering outstanding value and exceptional customer experiences. We maintain our unwavering commitment to delivering precision, quality, and performance by being perceptive, agile, and responsive.

Greystar Electronics


Combining skills, experience, and innovation to continually excel.

Our management team has the experience to ensure the premium products we provide will meet your unique and specific needs. They’ll pursue your project with a focus on delivering outstanding performance as well as efficiencies and exceptional value.

Our top four executives have more than 123 combined years of experience in the industry.

CEO Mary Moldenhauer: 40 years of delivering premier Contract Management leadership
Julia Goodin: 45 years in Quality Assurance Management
Lisa Hooey: 24 years in accounts payables and as a buyer 24
Duane Tyson: 44 years in Mechanical Testing and Industrial Engineering

They lead an experienced, well-trained, and highly talented and committed workforce in our Duluth, Minnesota, production facility.

what our customers are saying

Great work and great company locally to work with. Always friendly on the phone. Excellent Technical Expertise. Quality was great and price. Meeting all our expectations.

Good delivery schedule, quality, price,  customer support, over all expectations all good.

All excellent marks for delivery, technical expertise, customer support, communications, quality.

Excellent customer support, flexibility, quality. Good meeting delivery schedules ,technical support, price, quality, meeting overall expectations.

As a small business, GreyStar has helped us in every way, from technical advice and business referrals to timely production. We have been successful to this point because of the assistance of GreyStar.

Win Erickson


Greystar Electronics

We are

smart. agile. responsive.

with an unwavering committment to offer

Precision. Quality. Performance.

on every project.

Made In The USA


08AM -5PM Central

ISO 9001:2000 + AS9100D

certified company



(218) 624-0617


(218) 624-8012


215 North Central Avenue
Duluth, MN 55807