Honda Motorcycle GL1500I Gold Wing Interstate tail light bulbs include an inner size of 24 and outer size of 2057. The replacement chart covers 1992 to 1996 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Motorcycle GL1500I Gold Wing Interstate uses two distinct tail light positions across its 1992-1996 model years: an inner tail light and an outer tail light, each requiring a different bulb type.
The inner tail light position takes a size 24 bulb across all 1992-1996 model years. This is an ANSI-standard single-filament bulb rated at 12V and 2W, fitted with a BA9s base.
The BA9s base is a miniature bayonet-style cap with a 9mm collar, commonly found in low-wattage indicator and marker applications. Its 2W output places the size 24 among the lower-power bulbs used in automotive and motorcycle lighting.
The outer tail light position takes a size 2057 bulb across all 1992-1996 model years. This is an ANSI-standard dual-filament bulb rated at 12V with a high filament of 26.9W and a low filament of 8W, fitted with a BAY15d bayonet base.
The BAY15d base is an offset-pin bayonet mount that physically prevents incorrect filament orientation during installation. The offset pin arrangement ensures the high and low filaments are aligned correctly within the socket.
The size 2057 is a brighter variant of the 1157 bulb. While both share the BAY15d base and dual-filament design, the 2057 carries a higher wattage on its primary filament, making the two types non-interchangeable without accounting for the wattage difference.
Because the inner and outer tail light positions use bulbs with different base types, BA9s and BAY15d respectively, the two bulbs are not physically interchangeable with each other.
Both the size 24 and size 2057 conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical specifications within those markets.