1PZ Universal Turn Signal Switch Kit for 7/8" Handlebars — Left-side Control with Flasher Relay & Horn, 12V

1PZ Universal Light Turn Signal Switch + Flasher Relay + Horn is a complete left-side control kit that adds turn signals, horn and hi/lo beam control to most 7/8" handlebar motorcycles with a 12V electrical system.

This compact control assembly combines a multi-function switch, a 2‑pin flasher relay and a 12V round horn speaker into one kit designed for broad motorcycle compatibility. It’s built to fit standard 7/8" (22mm) handlebars and works with many popular brands — including Honda, Kawasaki, KTM, Suzuki and Yamaha — on 125cc and similar bikes. The kit simplifies adding or replacing left-side controls while keeping wiring and installation straightforward for riders comfortable with basic electrical work.

How does this kit fit my motorcycle?

The 1PZ control switch is sized for 7/8" (22mm) handlebars, the common diameter on most small and mid‑sized motorcycles. It clamps onto the left handlebar and positions the switches within easy thumb reach for safe operation. Verify your handlebar diameter and 12V system before ordering.

• Fits handlebars: 7/8" (22mm) clamp design
• Recommended bikes: 125cc and similar street/off-road motorcycles
• Not compatible: Harley models and most car applications
• Confirm: 12V electrical system required

What electrical requirements and limits should I know?

The included flasher relay is rated for a maximum of 42 watts. Each turn signal bulb must be under that power threshold, or you may need to install a load resistor to avoid hyper-flashing or relay failure. This kit was made for standard 12V motorcycle circuits and expects conventional incandescent or compatible LED setups when used with the correct resistors or LED relay.

• Voltage: 12V system only
• Relay max wattage: 42W (per specifications)
• LED bulbs: may require load resistor or LED-compatible relay
• Overload protection: add resistors if bulbs exceed wattage

How difficult is installation and are wiring colors consistent?

Installation is straightforward for users familiar with motorcycle electrics: mount the clamp, route the wires and connect to your bike’s harness. However, wiring color codes can vary between production batches, so use a multimeter to verify connections rather than relying solely on wire color. Basic tools and safety precautions are recommended.

• Tools: screwdrivers, small spanners, multimeter, wiring connectors
• Check: test wire functions before final assembly
• Note: wiring colors may vary across batches
• Tip: label or photo the original wiring before removal

Who is this for?

This 1PZ Universal kit is meant for riders who need a reliable, compact left-side control solution for 7/8" handlebar motorcycles with 12V electrical systems — especially owners of smaller displacement Hondas, Kawasakis, KTMs, Suzukis and Yamahas. It’s a good option for DIY mechanics, restorers replacing worn switches, or customizers adding a horn and flasher relay in one package. Avoid this kit if your bike uses nonstandard handlebar sizes or is a Harley model or automobile application.