Finding a reliable wiring harness for a Chinese 110cc ATV can be challenging. This guide focuses on durable, universally compatible options that cover common models and features like CDI boxes, solenoids, regulators, and ignition coils. The selections below are organized to help readers compare compatibility, installation notes, and included components. Each product is suited for popular Chinese-made 110cc and similar-class ATVs, go-karts, dirt bikes, and quad bikes. Read on to see five standout harness kits with detailed specs and practical considerations.
| Product | Brand | Key Feature |
|---|---|---|
| Complete Electrics Wiring Harness Kit | OTOHANS AUTOMOTIVE | Universal 49cc–125cc compatibility; full kit |
| Stator Coil CDI Wiring Harness | LEIMO KPARTS | Complete electrics loom; for 50–125cc ATVs |
| EOPOAYI Tao Tao Coolster Wiring Kit | EOPOAYI | Starter, relay, ignition coil, CDI; broad 110–125cc fit |
| 125cc Wiring Harness Kit | RUITONDA | Wide compatibility; Taotao, Kazuma, Baja, etc. |
| EOPOAYI Tao Tao Coolster Complete Kit | EOPOAYI | All-in-one harness with key switch and regulator |
Complete Electrics Wiring Harness for 4 Wheelers and Quads

The OTOHANS AUTOMOTIVE Complete Electrics Wiring Harness is designed as a universal fit for many Chinese-made engines from 49cc up to 125cc. Its kit includes an ATV wire harness, CDI box, solenoid relay, rectifier, ignition switch with two keys (waterproof), upgraded multi-functional ATV switch, stator, ignition coil, spark plug, fuse, and multiple cable ties. The product emphasizes correct polarity (red as positive, black as negative) and offers installation guidance. This breadth makes it a practical all-in-one replacement for a variety of ATV, quad, dirt bike, go-kart, and buggy applications.
Considerations: verify model compatibility before purchasing, and adhere to included instructions during installation. While universal, some models may require additional wiring adaptation. Battery wiring polarity and relay connections are critical during setup to avoid short circuits. Customer support is available for installation questions.
Stator Coil CDI Wiring Harness for 4 Stroke ATVs

The LEIMO KPARTS kit offers a complete electrics loom suitable for QUAD/ATV parts with 50cc–125cc engines. It’s described as compatible with a wide range of Chinese-made electric-start engines and signals a caution to avoid mismatches with different stator or CDI configurations found on some 150cc–250cc models. A comprehensive loom helps streamline replacements, with emphasis on compatibility and accurate model matching to prevent miswiring problems.
Considerations: verify model compatibility prior to purchase; the kit targets common 50cc–125cc platforms. It notes exclusions for certain higher-displacement or non-conforming engines (GY6, other 200–250cc setups). Proper routing and secure connections are essential to prevent shorts. The listing highlights that the kit is well-suited for ATVs, quads, dirt bikes, and go-karts.
EOPOAYI Wiring Harness Kit for Tao Tao Coolster 110cc/125cc

The EOPOAYI 110cc/125cc wiring harness kit is designed for Tao Tao Coolster and similar Chinese ATVs. It includes a starter relay, ignition coil, CDI box, stator, regulator, and a range of wires with careful polarity indications. It cautions users to confirm compatibility with the exact ATV model before purchasing and warns against using shorter harnesses on older vehicles. This kit targets a broad spectrum of 110cc–125cc Chinese ATVs and four-wheelers, emphasizing proper electrical connections and a robust set of included components.
Considerations: ensure relay polarity alignment with the positive line from the battery and correct battery terminal installation. The kit’s compatibility list covers several well-known brands, but model-specific differences can exist. Professional installation is advised if there is uncertainty about wiring route and safety.
125cc Wiring Harness Kit for 110cc ATVs and Mini Quads

The RUITONDA 125cc wiring harness kit targets a broad set of Chinese ATVs and mini quads, including 50cc–150cc ranges. It emphasizes a complete loom and compatibility with 50cc, 70cc, 90cc, 110cc, 125cc, and 150cc platforms, with caveats about not fitting GY6 motorbikes or certain Zongshen/Lifan configurations that use different stator/CDI. The kit is positioned for Taotao, Kazuma, Baja, Coolster, Roketa, and similar brands, offering a wide fit for multiple models and a cautionary note on professional installation to avoid short circuits.
Considerations: check magneto stator pictures to confirm match; the kit is best used when the model aligns with the listed Chinese ATV families. The instructions emphasize safe electrical work and a reminder that incorrect installation can cause shorts. It’s a practical option for owners seeking a single kit that covers a broad compatibility window.
EOPOAYI Complete Wiring Harness Kit for Tao Tao and Coolster

This EOPOAYI kit mirrors the Tao Tao/Coolster focus, providing a full harness with starter solenoid relay, ignition coil, CDI, regulator, and magneto stator. It reiterates the need to verify model compatibility and to avoid installing a harness on excessively old vehicles. The kit is designed for 110cc–125cc Chinese ATVs and similar four-wheelers, including Roketa, Loncin, Lifan, Baja, Vitacci, Icebear, and Buyang lines, among others. It stresses proper polarity and installation accuracy to prevent charging or short-circuit issues.
Considerations: compatibility is broad but model-specific checks are essential. The packaging highlights the core components that typically fail or wear with age, offering a straightforward replacement path for damaged harnesses on mid-sized Chinese ATVs and go-karts.
Buying Guide: Key Purchase Considerations
- Compatibility: Always verify model and engine size (40cc–125cc ranges are common; avoid mismatches with GY6 or 200–250cc classes).
- Included Components: Most kits include: harness loom, CDI box, solenoid relay, regulator, ignition switch, stator, ignition coil, spark plug, fuse, and ties. Confirm all needed parts are present for your setup.
- Wiring Polarity: Red typically denotes positive, black negative. Correct connections prevent shorts and battery drainage.
- Installation: Some kits require professional wiring or professional assistance, especially for complex bikes or unfamiliar models. Follow the manufacturer’s installation guide precisely.
- Brand and Support: Choose from established brands with clear compatibility notes and customer support to handle installation questions.
- Versatility vs. Specificity: Universal harnesses offer broad compatibility but may need adaptation. Specific kits tailored to Tao Tao, Coolster, Kazuma, or Baja models often simplify installation.
- Durability: Look for weather-resistant ignition switches, connectors, and robust loom construction to withstand ATV exposure and vibration.
- Safety and Regulations: Ensure the wiring harness complies with local safety standards and does not interfere with other electrical systems on the vehicle.