BULB - STOP TAIL 6V 21/5W - BAY15D

The Link International 6V 21/5W BAY15D is a dual-filament replacement stop/tail bulb designed for motorcycles and light vehicles running a 6-volt electrical system. The BAY15D bayonet base features offset locating pins to ensure correct polarity alignment when fitting.

Suited to classic, vintage, and older-model motorcycles that retain their original 6V electrics, this bulb offers a direct, like-for-like replacement without modification. The 21W filament activates under braking; the 5W filament provides continuous tail illumination.

• BAY15D bayonet base with offset pins for correct polarity orientation
• Dual filament: 21W stop/brake light and 5W tail/running light
• 6V rated — suited to classic and vintage motorcycles with 6-volt electrical systems
• Direct replacement fit; no wiring modification required

Disconnect the motorcycle's power before removing or fitting the bulb.
Align the offset pins on the BAY15D base with the corresponding slots in the socket, push in and twist clockwise to lock.
Handle the glass envelope with a clean cloth — skin oils transferred by bare hands can create hot spots that shorten bulb life.
Verify your motorcycle's electrical system is 6V before fitting; using this bulb in a 12V system will cause immediate failure.
Inspect the lens, reflector, and socket for moisture or corrosion each time a bulb is replaced.
If the bulb fails prematurely, check earth/ground connections and charging system voltage before fitting a replacement.
Store spare bulbs in their original packaging in a dry location away from impact.