YP100 CDI

⚡ Yamaha 100 CDI Igniter

📦 Part Number: MIYP100-5080

⚙️ Capacitor Discharge Ignition (CDI) · 8-Pin · YP100 LY149QMG

📍 Installation Position: Frame/Body · Near Electrical Box

✅ 8-Pin CDI · Stable Ignition · Direct Replacement · OEM Specification

This product is a Yamaha 100 CDI Igniter (Capacitor Discharge Ignition module), part number MIYP100-5080. This is an 8-pin CDI unit used on many gas scooters, ATVs, dirt bikes, and go karts with modern YP100 LY149QMG engines — the core control component of the ignition system.

The CDI (Capacitor Discharge Ignition) module is responsible for controlling ignition timing. It stores voltage from the magneto in a capacitor and releases it as high voltage to the ignition coil at the precise moment to fire the spark plug. If you think your CDI is no good, you will not be getting a pulse to the coil to fire the spark plug. If you have voltage in other areas and no spark, your CDI very well might be no good. The CDI, coil, and magneto are the main parts that create spark to run the scooter — these components can fail over time.

• ⚡ Precision Ignition: Built-in optimized ignition curve ensures accurate timing across all RPM ranges — improving combustion efficiency and power output.
• 🔌 8-Pin Connector: Standard 8-pin plug directly connects to the original wiring harness — no modifications needed.
• 🛡️ Reliable & Durable: High-quality electronic components with heat and vibration resistance for harsh operating environments.
• 🔄 Direct Replacement: Fully compatible with OEM CDI — plug-and-play installation with no modifications required.
• 🔧 Wide Compatibility: Suitable for a variety of vehicles with YP100 LY149QMG engines (scooters, ATVs, dirt bikes, go karts).

✅ Typical Signs That CDI Replacement Is Needed:
• Engine will not start — no spark at the spark plug.
• Multimeter shows voltage in other circuits but no ignition pulse.
• Intermittent stalling or high-speed misfire.
• Ignition coil and magneto test good but still no spark.
• Visible burn marks or physical damage on the CDI housing.
Replacing a faulty CDI promptly restores proper ignition and ensures reliable vehicle operation.

✅ Installation Tips:
1. Disconnect the battery negative terminal before installation for safety.
2. Locate the original CDI module (typically near the frame/electrical box).
3. Unplug the 8-pin connector from the old CDI.
4. Plug the new CDI's 8-pin connector directly into the original wiring harness.
5. Ensure the connector is fully seated and secure.
6. Reconnect the battery negative terminal and test the ignition.
Installation is simple — just plug and play. If you're not familiar with electrical work, professional installation is recommended.

⚠️ Important Notice: This product is a Yamaha 100 CDI Igniter, part number MIYP100-5080. This is an 8-pin CDI unit designed for vehicles equipped with YP100 LY149QMG engines. Ignition curves may vary across different model years or versions. We recommend confirming your original CDI specifications (8-pin) before purchase. Images are for reference only; actual product may vary.