Vintage Motorcycle Wiring Harnesses & Electrical Connectors

Shop vintage motorcycle wiring harnesses and electrical connectors for classic Honda, Yamaha, Suzuki, and Kawasaki motorcycles. This collection includes complete wiring harness assemblies, main looms, sub-harnesses, connector blocks, bullet connectors, spade terminals, plug housings, crimp terminals, and electrical repair components designed for motorcycles from the 1960s through the 1990s.

A properly functioning wiring harness is essential for reliable ignition performance, stable charging system operation, consistent lighting output, and overall electrical reliability. Aging wiring insulation, corroded terminals, loose bullet connectors, and brittle connector blocks are common causes of intermittent power loss, voltage drops, weak spark, blown fuses, dim lighting, and difficult-to-diagnose electrical issues on vintage motorcycles.

Replacing a deteriorated motorcycle wiring harness restores proper voltage distribution, secure grounding, and factory-correct routing throughout the electrical system. Installing fresh electrical connectors and terminals ensures clean contact points, improved conductivity, and long-term durability across stock and restored vintage builds.

Our inventory includes model-specific wiring harness replacements engineered for precise fitment, along with electrical terminals and connector components suited for repairs, restorations, and custom wiring projects. Whether you're rebuilding a classic Honda CB electrical system, troubleshooting charging instability, or correcting previous wiring modifications, we supply dependable electrical components designed for accurate compatibility and long-term performance.

For ignition timing and spark control components such as contact points, CDI units, spark advancers, and ignition switches, explore our Ignition Systems & Ignition Switches collection. For stators, regulator rectifiers, starter motors, and charging system components, visit our Starter & Charging System collection to complete your electrical restoration.

Old Bike Barn specializes in vintage Japanese motorcycle parts with trusted OEM and quality aftermarket components curated by experienced riders who wrench and maintain classic machines.