KOSO manufactures high-performance aftermarket electronic gauges, LED lighting, and engine components for motorcycles, scooters, and powersports vehicles.
KOSO is a premier manufacturer in the powersports aftermarket industry, best known for its high-quality digital instrumentation and electronic accessories. The brand specializes in developing precise monitoring systems, including multifunction speedometers, tachometers, EGT (Exhaust Gas Temperature) gauges, and air/fuel ratio meters, designed to enhance the riding experience for motorcycle, scooter, and ATV enthusiasts.
KOSO's product lineup also includes performance engine parts such as high-flow oil pumps, camshafts, and transmission components. With a slogan of "Feel The Speed," KOSO designs plug-and-play solutions for popular vehicle makes like Harley-Davidson, Honda, and Yamaha, offering riders both aesthetic upgrades and critical performance data. Their instruments are engineered for durability and accuracy, often featuring customizable displays and warning parameters to suit competitive racing or daily commuting needs.
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No. Opening or disassembling the unit yourself will void the warranty. Maintenance and repairs should only be executed by KOSO professionals.
First, ensure the wiring includes a solid ground and that the 12V power supply is connected. Check if the battery voltage is sufficient (at least DC 12V) and inspect the fuse and wiring harness for breaks.
For the KOSO Zenith LED headlight, connect the Yellow wire to the Low beam, the Blue wire to the High beam, the White wire to the Front Position Light, and the Black wire to the vehicle body or engine ground.
'LO RNG' indicates that the remaining fuel range is low (typically under 16 km or 10 miles). This is a warning to refuel soon.
Generally, you must have the key switched to ON, the engine stop switch OFF, and the meter displaying the Odometer. Then, hold both turn signal switches (or the specified button combination for your model) for 3 seconds to enter settings.