Nilight Handlebar Wiring Harness Kit 12V On/Off Switch for Motorcycle — Waterproof CNC Aluminum, Fits 7/8-inch Bars, 180W Relay

Nilight’s handlebar wiring harness kit is a complete 12V on/off switching solution that pairs a waterproof CNC-aluminum rocker switch with a heavy‑duty relay, inline fuse and dual output connectors for powering up to 180W of lighting.

This compact wiring kit is built to simplify installing auxiliary lights on motorcycles, ATVs, scooters and bicycles with 7/8" (22mm) handlebars. It combines a rugged 16 AWG stranded wiring harness with a relay-protected circuit and an illuminated rocker switch housed in a weather‑resistant sleeve. The result is a safer, cleaner install that keeps the switch on the bar while routing high current through the relay and fuse for protection.

How does the harness protect my lights and bike electrical system?

The kit routes current through a power relay and an inline blade fuse so high load is handled off the switch and protected from short circuits or overloads. The 16 AWG stranded wires support up to 180W total, and the nylon jacket resists heat and abrasion for long-term durability.

• 16 AWG stranded conductors rated for heavy loads
• Inline blade fuse for overcurrent protection
• Power relay carries high current instead of the handlebar switch
• Durable nylon jacket resists heat, oil and abrasion

Will the handlebar switch fit my motorcycle or ATV?

The switch assembly is designed to clamp onto standard 7/8" (22mm) handlebars used on most motorcycles, scooters, bicycles and many ATVs. A CNC aluminum housing and silicone sleeve provide a snug, weather-resistant installation so the control stays secure in wet or dusty conditions.

• Fits 7/8" (22mm) handlebars common on bikes and ATVs
• CNC aluminum and plastic construction for strength
• Silicone sleeve for waterproofing and dust protection
• Tested for 5,000 switch cycles for reliable operation

How do the dual outputs and illuminated switch help in practical use?

The harness includes two light output leads so you can power a pair of lights or run two fixtures more cleanly without additional connectors. The 3‑pin illuminated rocker switch shows red when the circuit is on, making it easier to verify status at a glance, especially in low light.

• Two output leads for dual fixtures or split loads
• 3‑pin illuminated rocker switch with red on indicator
• Stable connections reduce voltage drop and flicker
• Simple on/off control mounted conveniently on the bar

What does installation look like and what should I prepare?

Installation typically requires mounting the switch to the handlebar, grounding the harness to the vehicle chassis, connecting the fused power lead to the battery, and attaching the light outputs to your auxiliary lamps. Basic tools and an understanding of 12V wiring are helpful; follow polarity and fuse ratings to match your lights.

• Mount switch on 7/8" handlebar and secure silicone sleeve
• Connect fused power lead to battery positive terminal
• Attach ground lead to clean chassis grounding point
• Plug light fixtures into the two output connectors

Who this is for: Riders, commuters and weekend adventurers who want a tidy, protected way to add auxiliary lighting to motorcycles, scooters, ATVs or bikes. It's ideal if you prefer a handlebar-mounted control with relay‑protected high-current wiring, especially when powering two lights or keeping the bar area neat and weatherproof. If you need a simple, durable 12V switching solution that prioritizes safety and clean installation, this Nilight harness kit is designed to make the job easier.