The John Deere RSX860i headlight bulb specifications include a 894 bulb size for high beam and D1S bulb size for low beam applications. The replacement chart covers 2016 to 2017 vehicle production years with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The D1S bulb follows the ECE standard used in Europe and worldwide markets. It is an HID xenon discharge bulb rated at 85V and 35W, fitted with a PK32d-2 base and a built-in ignitor. Its design is specific to projector-type housings, which focus light through a lens rather than a reflector.
The 894 bulb follows the ANSI standard applicable to the US and Canadian markets. It is a single-filament halogen bulb with a PGJ13 base, rated at 12V and 37.5W.
The John Deere RSX860i carries two distinct high beam options for the 2016-2017 model years: the 894 halogen bulb, designated specifically for the Projector Light Kit, and the D1S HID bulb used in the standard projector-type housing configuration.
The low beam headlight position on the RSX860i uses the D1S bulb exclusively across the 2016-2017 model years, with no halogen alternative listed for that position.
The 894 and D1S bulbs are not interchangeable. They differ in operating voltage (12V versus 85V), base type (PGJ13 versus PK32d-2), and ignition requirements, as the D1S incorporates an integral ignitor that the 894 halogen type does not require.
The D1S bulb's 85V operating voltage reflects the high-voltage arc discharge process that produces xenon light output, which is fundamentally different from the resistive filament heating used in the 894 halogen bulb.
The 894 bulb in the high beam position is tied specifically to the Projector Light Kit, indicating it is associated with an accessory or optional lighting assembly rather than the base headlight configuration.