Harley-Davidson FXSTC Softail Custom Parking Light Bulb Size

Harley-Davidson FXSTC Softail Custom parking light bulb uses a 198 size. The replacement chart covers 1993 to 1999 production years with corresponding bulb specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1993-1999	198

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W.	198

Other Locations

Additional Notes

The Harley-Davidson FXSTC Softail Custom uses the 198 bulb for its parking light across the 1993-1999 model years.
The 198 bulb follows the ANSI standard, which is the recognized specification system for miniature bulbs in the United States and Canada.
This bulb belongs to the T5 form factor, a miniature wedge type that uses a tapering plastic base to make direct contact with the socket rather than relying on metal pins or a bayonet fitting.
The 198 operates at 12 volts and draws 2 watts, placing it among the lower-output bulbs used in automotive and motorcycle lighting applications.
The wedge base design of the T5 means the bulb is held in place by the socket walls themselves, and fitment depends on the socket being sized specifically for this base width.
Because the 198 is an ANSI-designated bulb, any replacement carrying that same designation is expected to share the same voltage, wattage, and base configuration.