Hey guys! Ever wondered how to boost your RX King's performance? One popular mod is converting the ignition system to fullwave. This basically means you're optimizing the electrical flow to get a more consistent and powerful spark. But, diving into the wiring can seem like a black art, right? Don't sweat it! This guide will break down the entire process, making it super easy to understand and implement. We're going to cover everything from why you'd want to do this to a step-by-step wiring walkthrough. So, grab your tools, and let's get started!

Why Go Fullwave on Your RX King?

Okay, before we get our hands dirty with the wiring, let's understand why you might want to consider a fullwave ignition system for your RX King. The stock, halfwave system is, well, adequate. But fullwave offers some significant advantages, especially if you're looking to improve performance and reliability.

• Increased Electrical Power: The main reason to switch to a fullwave system is the increased electrical power output. A fullwave rectifier converts the entire AC waveform from the stator into DC voltage, unlike a halfwave system that only uses half of the wave. This means more available power to run your lights, accessories, and most importantly, your ignition system. This is especially crucial if you've added power-hungry accessories like LED lights or plan to do so in the future. No more dim headlights or struggling to keep everything powered!
• More Consistent Spark: With a fullwave system, your CDI (Capacitor Discharge Ignition) unit receives a more stable and consistent voltage supply. This translates to a stronger and more reliable spark at the spark plug. A stronger spark leads to more efficient combustion, which can improve throttle response, fuel economy, and overall engine performance. Think of it as giving your engine a shot of adrenaline!
• Better Battery Charging: Fullwave rectifiers are more efficient at charging your battery. Because they use the full AC waveform, they can replenish the battery's charge faster and more effectively. This is particularly beneficial if you frequently use your RX King for short trips or in stop-and-go traffic, where the battery may not have enough time to fully recharge with the stock system. Say goodbye to dead batteries!
• Improved Reliability: Because a fullwave system provides a more stable and consistent power supply, it can actually improve the lifespan of your electrical components. The consistent voltage reduces stress on the CDI unit, regulator/rectifier, and other components, leading to fewer failures and a more reliable electrical system overall. Basically, it's an investment in the long-term health of your bike.
• Brighter Lights: Let’s be honest, the stock lighting on the RX King can be a bit lacking, especially at night. A fullwave conversion provides a significant boost in power, allowing you to run brighter headlights and taillights. This drastically improves your visibility and safety, especially when riding in low-light conditions. See and be seen!

In short, switching to a fullwave ignition system on your RX King offers a multitude of benefits, from increased power and improved performance to enhanced reliability and better lighting. If you're looking to get the most out of your bike, it's definitely a modification worth considering.

Parts You'll Need for the Conversion

Alright, so you're convinced that fullwave is the way to go? Awesome! Now, let's gather all the necessary parts before we start tearing things apart. Having everything on hand will make the process smoother and less frustrating. Here's a comprehensive list of what you'll need:

• Fullwave Rectifier/Regulator: This is the heart of the conversion. Make sure to get one specifically designed for fullwave systems. A common and reliable choice is a rectifier/regulator unit intended for Yamaha Mio or similar scooters, as they are readily available and offer good performance. Look for models with heat sinks for better cooling. It's crucial that the rectifier/regulator is designed for fullwave operation; a halfwave unit won't work.
• Wiring Harness/Connectors: Depending on the condition of your existing wiring, you might want to replace some or all of it. At the very least, you'll need some extra wire for making connections. High-quality automotive wire is recommended. Also, grab a selection of connectors (bullet, spade, etc.) to ensure secure and reliable connections. Proper wiring and connections are essential for the system to function correctly and safely.
• Stator Modification (If Necessary): In some cases, you might need to modify your stator to fully utilize the fullwave system. This usually involves rewinding the stator coils to optimize them for fullwave output. However, some riders have successfully implemented fullwave conversions without stator modification, especially if they are not running high-power accessories. Research your specific stator model and determine if modification is required. If you're not comfortable rewinding the stator yourself, it's best to have a professional do it.
• Battery (If Upgrading): While not strictly required, this is a good opportunity to upgrade to a slightly larger capacity battery. This will provide more reserve power for running accessories and starting the bike. Choose a battery that is compatible with your RX King's charging system and physical dimensions.
• Fuses and Fuse Holder: Safety first! Install a fuse in the main power wire coming from the battery to protect your electrical system from shorts and overloads. Choose a fuse with an appropriate amperage rating (e.g., 10-15 amps). Make sure the fuse holder is also weather-resistant.
• Tools: Of course, you'll need a basic set of tools, including: wire strippers, crimpers, a multimeter, a soldering iron (optional, but recommended for making secure connections), electrical tape, and zip ties.

Before you start buying parts, do your research and make sure everything is compatible with your RX King model. Online forums and communities dedicated to RX King modifications are great resources for getting advice and recommendations. Investing in quality parts will ensure a more reliable and long-lasting fullwave system.

Step-by-Step Wiring Guide

Okay, here's where we get into the nitty-gritty. This section provides a detailed, step-by-step guide to wiring up your RX King for a fullwave ignition system. Follow these instructions carefully, and double-check your connections at each step. Remember, a mistake in the wiring can damage your electrical components or even cause a fire.

Disclaimer: Working with electrical systems can be dangerous. If you're not comfortable with electrical work, it's best to have a qualified mechanic perform the conversion.

1. Disconnect the Battery: The very first thing you should do is disconnect the negative terminal of your battery. This will prevent any accidental shorts or electrical shocks during the wiring process. Safety first!
2. Locate the Stock Rectifier/Regulator: Find the original rectifier/regulator unit on your RX King. It's usually located near the battery or under the seat. Disconnect the wiring harness from the stock unit. Take pictures of the wiring before disconnecting anything – this will be helpful for reference later.
3. Identify the Stator Wires: Locate the wires coming from the stator (usually yellow or white). These are the AC input wires that feed the rectifier/regulator. You'll need to connect these wires to the AC input terminals of your new fullwave rectifier/regulator. Consult your rectifier/regulator's wiring diagram to identify the correct terminals.
4. Connect the Stator Wires to the Fullwave Rectifier/Regulator: Connect the stator wires to the AC input terminals of your new fullwave rectifier/regulator. It usually doesn't matter which stator wire goes to which AC input terminal, as they are interchangeable. Secure the connections with bullet connectors or by soldering.
5. Connect the Ground Wire: The fullwave rectifier/regulator will have a ground wire (usually green or black). Connect this wire to a good ground point on the frame of your RX King. Make sure the ground point is clean and free of rust or paint. A solid ground connection is crucial for the system to function properly.
6. Connect the Positive (+) Output Wire: The fullwave rectifier/regulator will have a positive (+) output wire (usually red). This wire provides the DC voltage to charge the battery and power the electrical system. Connect this wire to the positive (+) terminal of your battery, through a fuse. Use a fuse holder and a fuse with an appropriate amperage rating (e.g., 10-15 amps). This will protect your system from shorts and overloads.
7. Connect the Switched Power Wire (If Applicable): Some fullwave rectifier/regulators have a switched power wire (usually blue or black with a white stripe). This wire provides power to the ignition system and other components only when the ignition switch is turned on. Connect this wire to the corresponding wire on your RX King's wiring harness. Consult your bike's wiring diagram to identify the correct wire.
8. Secure and Insulate the Connections: Once you've made all the connections, carefully secure them with electrical tape or heat shrink tubing. Make sure there are no exposed wires that could cause a short. Use zip ties to neatly organize the wiring and keep it away from moving parts.
9. Reconnect the Battery: Reconnect the negative terminal of your battery.
10. Test the System: Before you button everything up, test the system to make sure it's working properly. Use a multimeter to check the voltage at the battery terminals with the engine running. You should see a voltage of around 13.5-14.5 volts. Also, check that your lights and other accessories are working correctly.

Important Considerations:

• Wiring Diagram: Always refer to a wiring diagram for your specific RX King model and the fullwave rectifier/regulator you are using. Wiring diagrams can be found online or in service manuals.
• Polarity: Pay close attention to the polarity of the connections. Connecting the positive and negative wires incorrectly can damage your electrical components.
• Grounding: A good ground connection is essential for the system to function properly. Make sure the ground point is clean and free of rust or paint.
• Soldering: Soldering the connections is recommended for a more secure and reliable connection. However, if you don't have a soldering iron, you can use crimp connectors.

Troubleshooting Common Issues

Even with careful wiring, sometimes things don't go exactly as planned. Here are some common issues you might encounter after installing a fullwave ignition system on your RX King, along with troubleshooting tips:

• No Spark: If you're not getting any spark after the conversion, the first thing to check is the wiring. Make sure all the connections are secure and that the polarity is correct. Also, check the fuse to make sure it hasn't blown. Other potential causes include a faulty CDI unit, ignition coil, or spark plug.
• Weak Spark: A weak spark can be caused by a low voltage supply to the CDI unit. Check the voltage at the CDI unit with the engine running. It should be close to 12 volts. Also, check the condition of your spark plug and ignition coil.
• Battery Not Charging: If your battery is not charging, check the voltage at the battery terminals with the engine running. It should be around 13.5-14.5 volts. If it's lower than that, check the fullwave rectifier/regulator. It may be faulty. Also, check the stator output voltage. It should be within the specified range.
• Overcharging: Overcharging can damage your battery. If the voltage at the battery terminals is higher than 14.5 volts with the engine running, the fullwave rectifier/regulator is likely faulty and needs to be replaced.
• Blown Fuses: If you're blowing fuses repeatedly, there's likely a short circuit in your wiring. Carefully inspect the wiring for any exposed wires or damaged insulation. Also, check the amperage rating of the fuse. It should be appropriate for your system.
• Dim Lights: If your lights are dim, it could be due to a low voltage supply. Check the voltage at the headlight and taillight. It should be close to 12 volts. Also, check the ground connections for the lights.

If you're still having trouble troubleshooting the system, consult a qualified mechanic. They will have the tools and expertise to diagnose and repair any electrical problems.

Final Thoughts

Converting your RX King to a fullwave ignition system is a worthwhile upgrade that can significantly improve its performance and reliability. While the wiring process may seem daunting at first, by following this guide and taking your time, you can successfully complete the conversion yourself. Remember to double-check your connections, use quality parts, and always prioritize safety. With a little patience and effort, you'll be enjoying the benefits of a fullwave system in no time! Happy riding!