Mitsubishi Fuso FG front and rear turn signal bulbs use 1156 size bulbs for illumination purposes. The replacement chart covers vehicle production spanning 1990 to 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mitsubishi Fuso FG uses the 1156 bulb for both its front and rear turn signals across the 1990-1993 and 1998 model years.
The 1156 is an ANSI-standardized bulb type, meaning its physical and electrical specifications are governed by a recognized North American standard used in the United States and Canada.
This bulb operates on a 12-volt electrical system and draws 21 watts, which is typical for incandescent automotive turn signal applications.
The 1156 is a single-filament bulb, meaning it serves one lighting function only, as opposed to dual-filament types that can handle two functions such as braking and signaling simultaneously.
It uses a BA15s bayonet base, where "BA15s" denotes a single-contact bayonet fitting with a 15mm base width. The single-contact design corresponds directly to the single-filament construction.
Because the same 1156 bulb is specified for both the front and rear turn signal positions on the Fuso FG, a single bulb type covers all four turn signal sockets on the vehicle.
The BA15s bayonet mount is a twist-and-lock style base, which physically differs from wedge-base and screw-base bulb types and is not interchangeable with them even when wattage or voltage ratings match.
A common point of confusion exists between the 1156 and the visually similar 1157. The 1157 uses a BAY15d dual-contact bayonet base and carries two filaments, making it electrically and physically incompatible with sockets designed for the single-contact 1156.