Nilight Handlebar Light Bar Wiring Harness Kit 12V On/Off Switch for 7/8-inch Bars — Relay-Protected, Waterproof

Nilight's motorcycle handlebar wiring harness kit is a heavy-duty 12V on/off switch assembly that lets you safely control auxiliary light bars from a 7/8" handlebar mount.

This compact kit combines a rugged relay-protected harness, an illuminated rocker switch with silicone sleeve, and high-temperature nylon jacketed wiring to deliver a reliable, weather-resistant control solution for motorcycles, ATVs, scooters and bicycles with 7/8" handlebars. It’s designed to simplify installation, protect electrical components from overcurrent and provide a clear visual on/off indicator.

How does the harness protect my lights and motorcycle wiring?

The harness uses a dedicated power relay and an inline blade fuse to keep the accessory circuit isolated from main wiring, reducing the risk of overload and short circuits. Heavy 16 AWG stranded wire carries up to 180W safely, while the nylon jacket resists abrasion and high temperatures for longer service life.

• 16 AWG stranded conductors rated for up to 180W total load
• Inline blade fuse for overcurrent protection
• Power relay isolates switch from high current draw
• Durable nylon jacket resists heat, oil, and abrasion

Will the handlebar switch survive weather and daily use?

The Nilight handlebar switch combines CNC aluminum alloy and plastic construction with a silicone sleeve for water, dust and weather resistance. The rocker switch is illuminated (red indicator) for easy visibility, and it has been tested for longevity through thousands of actuations.

• Silicone sleeve provides waterproof and dustproof protection
• CNC aluminum and reinforced plastic housing for durability
• Illuminated 3-pin rocker switch with red on indicator
• Tested for over 5,000 presses to ensure reliable operation

How easy is installation and what’s included in the package?

Installation is straightforward for anyone comfortable with basic 12V wiring: route the harness, mount the switch on a 7/8" handlebar, and connect spade terminals to your light bar and battery. Nilight supplies the most common hardware so you won’t need extra parts to get started.

• Complete wiring harness with pre-terminated connectors
• Handlebar rocker switch sized for 7/8" handlebars
• Blade fuses and spade terminals included for neat, secure connections
• Printed instructions to guide wiring and mounting steps

Can this kit handle multiple light bars or high-power accessories?

The harness supports up to approximately 180W total on the 16 AWG wiring, so it’s suitable for a single medium-power light bar or a modest combination of LEDs. For heavier loads it’s better to confirm combined wattage or use a higher-capacity harness and relay setup.

• Rated up to 180W on supplied 16 AWG wiring
• Relay reduces heat at the handlebar switch by carrying main current externally
• Use larger-gauge harness for higher-wattage lighting systems

Who this is for: Riders, DIY mechanics and commuters who want a tidy, protected way to operate auxiliary lighting from a 7/8" handlebar fitment. It’s ideal for motorcycle and ATV owners adding an LED light bar, or for scooter and bicycle riders who need a compact, weather-resistant on/off switch with basic overload protection.