The Yamaha CP250 Morphous uses 1157NA and 1034NA bulbs for front turn signals and 12496 bulb size for rear turn signals. The replacement chart covers 2006 through 2008 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 1157NA is the most frequently specified bulb across these turn signal positions, appearing in the front turn signal slot for the Yamaha CP250 Morphous in 2007-2008.
The 1157NA operates on a dual-filament design rated at 12V with a 21W high filament and a 5W low filament, housed in a BAY15d bayonet base with natural amber glass.
The BAY15d bayonet base features offset pins, which physically prevents incorrect single-filament bulbs from being seated in the socket.
The 1034NA, specified for the 2006 front turn signal, shares the same BAY15d base and 12V/21W/5W ratings as the 1157NA but is a distinct ANSI variant of that bulb type.
Although the 1034NA and 1157NA share a base type and voltage-wattage rating, they are separate ANSI part numbers and are not guaranteed to be interchangeable without confirming physical and electrical compatibility.
Both the 1157NA and 1034NA carry ANSI standardization applicable to the US and Canadian markets, meaning their electrical and physical specifications conform to a defined industry standard rather than a proprietary one.
The 12496 is a Philips/Osram part number rather than an ANSI-standardized designation, indicating it is sourced from a manufacturer-specific catalog for specialty applications.
The 12496 is rated at 12V and is classified as a halogen bulb, though its wattage is not specified in the provided data.
The rear turn signal of the CP250 Morphous uses the 12496 across all three model years covered, 2006-2008, while the front position changed bulb types between 2006 and 2007.
Because the rear turn signal relies on a specialty halogen part number tied to a specific manufacturer, sourcing a replacement may require referencing Philips or Osram catalogs rather than general ANSI bulb references.