EOPOAYI Complete ATV Wiring Harness Kit for 70–125cc (Tao Tao/Coolster) — Includes CDI, Stator & Rectifier

EOPOAYI Complete Wiring Harness Kit is a ready-to-install replacement wiring set that includes coil, CDI, stator, rectifier, relay, switches and connectors for most 70–125cc Chinese 4-stroke ATVs such as Tao Tao and Coolster.

If your small ATV has electrical trouble, blown components, or a mismatched harness, this all-in-one kit supplies the common electrical parts you need to restore ignition, charging and switched functions quickly. The kit is designed for many 70cc–125cc Chinese-model 4-stroke quads and includes clear connectors and zip ties to simplify routing. Before buying, verify your ATV’s stator and CDI type against the product images and wiring diagram to ensure compatibility.

How will this kit restore my ATV’s ignition and charging?

The kit replaces the core electrical elements: stator for power generation, CDI for ignition timing, ignition coil for spark, and a rectifier/regulator to control charging voltage. When installed correctly, those components reestablish spark and charge to the battery and electrical system.

• Includes stator (magneto) and 5-pin AC CDI box for ignition control
• Ignition coil and A7TC spark plug for reliable spark delivery
• Rectifier/regulator to stabilize charging output

Which ATV models and engines is this wiring harness compatible with?

This wiring harness is built for many small Chinese-made 4-stroke ATVs with 70–125cc engines. It fits Tao Tao, Coolster and a wide list of similar mini quad models, but it is not universal for larger or GY6-style engines.

• Fits many 70cc, 90cc, 110cc and 125cc Chinese 4-stroke ATVs (e.g., Tao Tao, Coolster, NST, Sunl)
• Compatible with brands like Kazuma, Icebear, Roketa, Loncin, Lifan, Redcat and others listed
• Not compatible with GY6 motorcycles or 200–250cc Zongshen/Lifan quads with different stator/CDI

What parts are included and how should I prepare for installation?

The package is comprehensive: harness, ignition and charging components, switches, relay and small hardware. You should verify connector types, note that red is positive and black is negative, and have a wiring diagram on hand. Professional installation is recommended if you’re not confident with electrical systems.

• Package: wiring harness, ignition coil, 5-pin AC CDI, solenoid relay, spark plug, rectifier, key switch, multifunction switch, stator, fuse and 10 zip ties
• Observe polarity: red = positive, black = negative; relay terminal must connect to positive
• Check pictures and wiring diagram before installing; wrong assembly prevents proper operation

Are there any common pitfalls or technical limitations I should know about?

Yes — the kit is a short harness intended for reasonably recent small ATVs; it won’t fit older machines with custom wiring, nor systems using different CDI or stator types. Confirm the magneto/stator image and wiring layout match your vehicle before purchase.

• Not suitable for excessively old vehicles or machines with non-matching stator/CDI
• Do not use on GY6-engine motorcycles or 200–250cc ATVs with different components
• Cable lengths are optimized for mini quads; extended routing may require modifications

Who is this for? This EOPOAYI kit is aimed at owners, mechanics and small-vehicle shops that need a one-box electrical replacement for 70–125cc Chinese 4-stroke ATVs like Tao Tao and Coolster. It’s ideal if your bike has a failed stator, coil, CDI or regulator and you want matched parts to restore ignition and charging without sourcing components individually. If you’re unsure about compatibility or lack electrical experience, have a qualified technician confirm fitment and perform the installation to avoid damage from incorrect wiring.