OTOHANS AUTOMOTIVE Complete Wiring Harness Kit for 49–125cc ATVs and Pit Bikes — Ignition Coil, CDI, Stator, Regulator (Electric S

Complete plug-and-play electrical wiring harness kit by OTOHANS AUTOMOTIVE for 49–125cc electric-start ATVs, pit bikes, go-karts and dirt buggies.

This all-in-one kit includes the main wiring loom plus the ignition coil, stator, CDI, rectifier/regulator, solenoid relay, ignition switch with keys, spark plug and related accessories so you can replace or upgrade a full electrical system quickly. It’s designed for many Chinese-manufactured upright engines in the 49–125cc range and comes with a wiring diagram and color-coded leads to help match connections during installation.

What exactly is included in the OTOHANS wiring harness kit?

The kit bundles every primary electrical part required for an electric-start small engine: the harness loom, CDI (5-pin AC), solenoid relay, rectifier/regulator, ignition switch with two waterproof keys, multifunction handlebar switch, stator (magneto), ignition coil with lead, spark plug, fuse and cable ties.

• Complete wiring loom with labelled connectors and color-coded leads
• 5-pin AC CDI module and ignition coil for spark control
• Stator (magneto) and rectifier/regulator for charging
• Waterproof ignition switch, solenoid relay, spark plug, fuse and 10 cable ties

Which engines and vehicles will this harness fit?

This harness is broadly compatible with many Chinese-made electric-start upright engines between 49cc and 125cc. It suits ATVs, pit bikes, go-karts, quad bikes, dirt bikes, buggies and certain scooters—but it is not universal for every model or larger displacement engines.

• Fits most 49cc–125cc electric-start upright engines (Chinese manufacturers)
• Common applications: ATV, Quad, Pit Bike, Go-Kart, Dirt Buggy, Scooter
• Not compatible with GY6 motors or 200–250cc Zongshen/Lifan stator/CDI systems

How do I install it safely and avoid wiring mistakes?

Follow the included wiring diagram and color codes carefully: red = positive, black = negative; yellow wires generally handle charging; blue/white are trigger wires; green is ground. If you are not confident with electrical work, have a qualified mechanic complete the installation to reduce risk of damage or fire from incorrect connections.

• Match connectors using the supplied diagram and product images before connecting
• Observe polarity (red positive, black negative) and ground green wires securely
• Hire a professional mechanic when unsure—wrong wiring can damage components

Will this kit improve charging or starting performance?

The kit replaces worn or damaged charging and ignition parts, restoring factory-style charging, spark timing and starting reliability when installed correctly. It supplies a full set of components so faulty parts are addressed together instead of piecemeal replacements.

• New stator and rectifier/regulator restore consistent charging output
• Fresh CDI and ignition coil improve spark reliability and starting
• Complete loom reduces intermittent faults caused by old wiring or connectors

Who this is for: Riders, mechanics and DIYers looking to restore or replace a small electric-start engine’s full electrical system without buying individual parts. Ideal for owners of Chinese-manufactured 49–125cc ATVs, pit bikes, go-karts and dirt buggies who want a single kit with clear wiring guidance. Check your engine type and the included stator photos before purchase; if uncertain, consult a technician to confirm compatibility.