OTOHANS AUTOMOTIVE GY6 Wiring Harness Kit for 125cc/150cc - Complete Copper Loom with CDI & Stator

OTOHANS AUTOMOTIVE Complete Wiring Harness Kit is a full electrical loom assembly—complete with copper wire, CDI, ignition coil, stator, rectifier and switches—designed to replace or upgrade the electrical system on GY6 4-stroke 125cc and 150cc small engines.

This universal wiring harness kit is engineered to provide a ready-made replacement loom for many Chinese-made electric-start upright engines and GY6-style 4-stroke platforms. The assembly groups the most commonly replaced electrical components into one package to simplify repair, minimize troubleshooting time, and restore reliable starting and charging performance when matched to compatible models. Materials are weather-resistant and the main conductors are full copper to ensure steady conductivity under typical riding conditions.

Will this harness fit my ATV, scooter, or pit bike?

This harness fits a broad range of Chinese-made electric start upright engines commonly used in ATVs, scooters, pit bikes, and go-karts—especially GY6 125cc and 150cc platforms. However, it does not suit certain stator designs used by some Zongshen or Lifan models and does not fit specified 49cc/50cc/70cc/110cc/150cc/200cc/250cc/300cc models with different stators.

• Compatible with many GY6 4-stroke 125cc and 150cc engines.
• Common brands supported: Coolster, Kazuma, Taotao, Kuda, Motoworks, and more.
• Not compatible with models using different stator designs (see product note).
• Confirm your engine/model before ordering to ensure fitment.

What components are included in the kit and why they matter?

The kit bundles the core electrical parts you'll usually need after a wiring failure or during a rebuild, so you avoid sourcing individual parts from different suppliers. Each item is intended to integrate directly into the wiring loom to reduce connector mismatches and soldering work.

• CDI unit — controls ignition timing for spark delivery.
• Spark plug and ignition coil — provide the high-voltage pulse to ignite fuel.
• Magneto stator — supplies charging output to the electrical system.
• Rectifier and solenoid relay — manage charging and starter engagement.
• Ignition switch and ATV handlebar switch — key and controls for operation.

How difficult is installation and what tools will I need?

Installation difficulty ranges from moderate to straightforward for someone with basic mechanical skills and wiring experience. The harness is pre-assembled to reduce on-bike splicing, but you should still verify connectors, tidy routing, and secure ground points to avoid intermittent faults.

• Basic hand tools: screwdrivers, pliers, socket set.
• Multimeter recommended to confirm continuity and correct voltages.
• Zip ties and electrical tape for routing and strain relief.
• Time estimate: 1–3 hours depending on access and model complexity.

What durability and performance can I expect from this wiring loom?

The loom uses full copper conductors and weather-resistant jacketing to withstand vibration, moisture, and heat typical around small engines. While built to meet or exceed common OEM specifications, longevity depends on correct installation and avoiding sharp rubbing or heat exposure from headers.

• Copper wiring for reliable conductivity and reduced voltage drop.
• Weather-resistant sheathing to resist moisture and road grime.
• Pre-terminated connectors to help prevent loose contacts.
• Packaged components designed to match common OEM locations.

Who is this for: This OTOHANS AUTOMOTIVE harness kit is intended for owners, mechanics, and hobbyists rebuilding or repairing GY6-style 125cc and 150cc four-stroke scooters, ATVs, pit bikes, go-karts, and buggies who want a single-package electrical replacement. If you need a complete set of ignition and charging components to replace a damaged loom or to simplify a restoration, and your engine uses a compatible stator design, this kit gives the core parts needed to get the electrical system back to working order. Always check model compatibility before purchasing or contact us with your vehicle details if you are unsure.