Suzuki Motorcycle GV1400 Cavalcade Tail Light Bulb Size

The Suzuki Motorcycle GV1400 Cavalcade tail light requires a 1034 bulb size for proper installation on the rear of the vehicle. Data for the tail light covers the range from 1986 to 1989.

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 Type	Shop
1986-1989	1034	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1034	Check Price

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Additional Notes

The Suzuki Motorcycle GV1400 Cavalcade uses the 1034 bulb for the tail light position across the 1986-1989 model years.
The 1034 is an ANSI-standardized bulb type recognized in both the United States and Canada, operating at 12 volts with a dual-filament output rated at 21/5 watts.
The dual-filament design of the 1034 allows it to serve two lighting functions within a single housing, with the higher-wattage filament typically handling the brake light function and the lower-wattage filament handling the running light function.
The 1034 uses a BAY15d bayonet base, which is an offset twin-pin base that physically prevents incorrect installation by ensuring the bulb can only be seated in one orientation.
The 1034 is a variant of the widely available 1157 bulb; however, the two are not directly interchangeable despite their close relationship, as differences in pin offset and wattage ratings distinguish them for specific fitment applications.