UNPLUG THE OLD.
PLUG IN THE NEW.

Wiring harnesses for 1980s–2000s Ford trucks — transmission, charging, and ignition. Manufactured in Canton, Georgia.

The Original Modular Replacement Harness

Every HHC harness is modular — individual sections unplug and replace independently without rewiring the whole truck. When a section wears out from heat or age, you swap that piece, not the entire harness.

What Truck Do You Drive?

Answer a few questions and we'll match you to the exact harness your truck needs. No fitment charts, no guesswork.

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Model
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Engine
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Trans

A Manufacturer, Not a Middleman.

In-House Manufacturing

Every harness is traced from factory originals, assembled on dedicated jigs, and tested in-house. Not mass-produced, not dropshipped, not rebranded.

Direct Connector Sourcing

We source OEM-spec connector housings direct from the warehouse. Ford discontinued them — we didn't.

Proper Construction

TXL wire, heavy-duty nylon corrugated conduit, Ford OEM-spec connectors. Built on a jig, not in a bag.

Real Warranty

3-year HHC warranty. Not a 30-day parts store return policy.

Expanding Ford Coverage

F-150 / Bronco E4OD Transmission Harnesses

ZF5 Manual Transmission Harness

Mazda M5OD Manual Transmission Harness

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