Alchemoto is a seasoned motorcyclist and gear reviewer, known for collaborating on dozens of moto-accessory reviews on his YouTube channel. He also runs a personal blog where he shares insights and budget-friendly gear for riders. In April, we teamed up with Alchemoto to install and test our Colight D09 series on his Harley Davidson Pan America 1250.
If you're a fan of off-road adventures and ride a Harley, this article is for you — discover how to enhance your bike with the powerful D09 lighting system!
Wiring & Installation Guide
The D09 series comes with a dedicated switch that can be mounted according to your riding preference. Alchemoto chose to install the switch on the left handlebar using the Colight-provided bracket.
The brackets are compatible with 0.75–1.25 inch and 1.25–2 inch tubular bars. Alchemoto selected the suitable size and adjusted the tightness for a secure fit.
Beneath the seat of the Harley Pan America 1250 is an auxiliary plug that includes a constant power line, an ACC line, and a ground wire—commonly used for factory spotlights or other accessories.
The plug connects to the bike’s battery and supplies power via a lead routed to the USB port under the seat.
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Red Wire — ACC Power
Connects to the battery's positive terminal via a fuse-protected wire set, ensuring the lights only power on when the ignition is active to prevent battery drain.
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Green Wire — Horn Line
Wired to the horn, enabling the light to flash when the horn is pressed — ideal for alerting others and enhancing road safety.
Cables are neatly organized with tape to ensure a clean, clutter-free installation.
🔧 Pro Tip:
Depending on your riding habits and local traffic laws, the "overtake" feature is optional. Alchemoto, for example, chose not to use it.
Real-World Lighting Test
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White DRL (Daytime Running Light)
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Main Beam Illumination
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Strobe Modes: Synchronized / Alternating Flashes
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Lighting Comparison: Off vs On
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Yellow Lens Filter Effect
Conclusion
The Colight D09 series is a high-performance spotlight engineered for long-range visibility and multifunctional use. Whether you’re exploring off-road trails, setting up camp, or riding through city streets, D09 ensures you ride with confidence and clarity.
This collaboration with Alchemoto provides a full walkthrough of the installation process and real-world lighting performance on the Harley Davidson Pan America 1250. If you're looking to upgrade your motor's lighting, D09 is your go-to choice.
📌 Ready to elevate your ride? Click here to shop the Colight D09 series now!
🎁 Don’t forget to use the exclusive discount code ALCHEMOTO for a special offer!
📺 Want to see more? Visit Alchemoto’s YouTube channel for detailed reviews and inspiration for your next ride.