Honda Motorcycle CMX450C Rebel Turn Signal Bulb Size
Honda Motorcycle CMX450C Rebel front turn signal bulb uses 1034 size while rear turn signal bulb uses P21W size. Replacement chart covers 1986-1987 production years with bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Motorcycle CMX450C Rebel uses two distinct bulb types across its front and rear turn signal positions, with the front and rear positions drawing from different international standards.
The 1034 bulb, fitted to the front turn signals of the CMX450C Rebel for 1986-1987, follows the ANSI standard used in the United States and Canada.
The 1034 is a dual-filament bulb operating at 12V with a 21/5W output, meaning one filament handles the higher-wattage turn signal function while the second filament serves a lower-wattage secondary purpose.
The 1034 uses a BAY15d bayonet base, which is an offset twin-pin fitting. This offset pin arrangement prevents incorrect insertion by ensuring the bulb seats in only one orientation.
The 1034 is a variant of the widely used 1157 bulb, sharing the same dual-filament BAY15d configuration and general electrical characteristics.
The P21W bulb, fitted to the rear turn signals of the CMX450C Rebel for 1986-1987, follows the ECE standard used in Europe and internationally.
The P21W is a single-filament bulb operating at 12V and 21W, dedicated solely to signalling without a secondary filament for additional functions.
The P21W uses a BA15s bayonet base, which is a single-pin fitting. This distinguishes it from the BAY15d base of the front 1034 bulb, making the two bulbs physically non-interchangeable despite sharing the same 12V operating voltage and similar wattage on their primary filaments.