Factory Interiors

Lectric Limited – Original Design & Classic Update Wiring for Classic and Muscle Cars

Lectric Limited is the oldest manufacturer of accurate reproduction wiring harnesses in the world, with over 50 years devoted to the research, development, and manufacture of automotive wiring and electrical products for classic and muscle cars. The company manufactures and offers more than 25,000 reproduction and replacement electrical products — wiring harnesses and complete wiring systems, wire leads, battery cables, spark plug wire sets, switches, update and conversion products, electrical devices, and lighting.

Most owners have never heard the Lectric Limited name, and there is a simple reason: the overwhelming majority of its products are sold through a world-wide dealer distribution network rather than direct to the public. Factory Interiors is proud to be one of those dealers.

The Lectric Limited Story

Lectric Limited has manufactured wiring harnesses, spark plug wire sets, and related wiring products in the Chicago area for more than five decades. Production runs out of a 28,000 square foot facility just outside Chicago, IL, where wire is cut, stripped, and terminated (with a specialty in Packard Electric® terminal crimping), spliced, dip-soldered, assembled, and electronically circuit-tested under one roof.

That facility is climate-controlled for both materials and production staff, and the result is a company built around a narrow, deliberate specialty: getting the wiring behind the dash, under the hood, and through the body of a classic or muscle car back to factory-correct, or factory-improved, condition.

Why Lectric Limited?

Wiring is not a part that tolerates approximation. A harness has to route correctly, terminate correctly, and carry the right circuits to the right components — get any of that wrong and the car simply doesn’t run right, or doesn’t run at all.

Lectric Limited addresses that two ways. Its Original Design Series™ harnesses and wiring are built to reproduce the factory harness, connector for connector and circuit for circuit, for owners restoring a car to original or judged-show condition. Its Classic Update Series™ takes the opposite approach for owners building a driver: modernized, simplified wiring systems and conversion harnesses (alternator upgrades, electronic ignition conversions, courtesy light delay modules, and more) that let a classic-bodied car run modern electrical components without a from-scratch rewire.

Cars wired with Lectric Limited’s Original Design Series harnesses, spark plug wires, and battery cables routinely take home top judging awards in the GM, Chrysler, and Jeep show circuits — including, in the Corvette world, NCRS® Top Flight® and Concours Judging®, Bloomington Gold® Certification, Muscle Car and Corvette Nationals™ Triple Diamond™ and Concours Stock, and Chevy/Vettefest™ Gold Spinner Concours™ and Triple Crown™ recognition.

Product Coverage

Lectric Limited manufactures and supplies wiring and electrical products for classic GM, Mopar, Ford, Jeep, and AMC vehicles, including:

• Complete Wiring Harness Sets and individual Wiring Harnesses & Lead Wires
• Classic Update Series™ wiring systems and update/conversion harnesses
• Battery Cables and Ground Straps
• Spark Plug Wire Sets (reproduction and replacement)
• Switches (headlight, ignition, neutral safety, turn signal, and more)
• Electrical Devices (relays, flashers, sending units, voltage regulators, ignition components)
• Repair Components, connectors, and harness tape
• Lighting, light bulb sets, and Battery Butler® battery care products

Coverage is organized by exact year, make, and model — the correct harness or component for a 1969 Camaro is not treated as interchangeable with a 1970, because on the real car it usually wasn’t.

Made in America

Lectric Limited builds its products in the United States, by American workers, for American-made classic and muscle cars. Assembly, wire processing, and quality control all take place at the company’s own Chicago-area facility rather than through an outside contractor, which keeps tolerances consistent from batch to batch and keeps popular parts in stock rather than on backorder.

Purchases from Lectric Limited and its dealer network carry a 1-year factory warranty on the vast majority of products, along with free technical support before and after the sale — because wiring questions are rarely simple, and Lectric Limited’s staff wrote the harness diagrams in the first place.

Why Buy Lectric Limited from Factory Interiors?

Factory Interiors is proud to offer Lectric Limited’s wiring and electrical products for classic and muscle cars. Our platform is built specifically for automotive restoration, letting you shop by year, make, and model so the harness, switch, or cable you order is the one built for your car — not a close approximation.

Whether you’re chasing NCRS or Bloomington Gold judging points with an Original Design Series harness, or simplifying a driver-quality rewire with a Classic Update Series system, our team can help you find the right part the first time.

Built to Get Your Car Running Right

From a single spark plug wire set to a complete Original Design Series harness system, Lectric Limited’s products are built to restore — or modernize — the electrical system of a classic or muscle car correctly. With over 50 years of specialization, an in-house Chicago-area manufacturing facility, and a reputation built on show-winning accuracy, Lectric Limited remains a definitive name in classic automotive wiring.