The Mitsubishi Mighty Max turn signal requires a 3757NA bulb size for the specific lighting components located on the front or rear of the vehicle. Data for the bulb specifications covers the range from 1995 to 1996.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mitsubishi Mighty Max uses two distinct bulb types across its front turn signal positions: the 1156 for model years 1988-1996 and the 1157 for model years 1983-1987.
The 1156 is a single-filament bulb operating at 12V and 21W, fitted with a BA15s bayonet base, and conforming to ANSI standards applicable in the US and Canada.
The 1157 is a dual-filament bulb operating at 12V with filaments rated at 21W and 5W respectively, fitted with a BAY15d bayonet base, and also conforming to ANSI standards for the US and Canada.
The BA15s base of the 1156 and the BAY15d base of the 1157 are not interchangeable. The BAY15d base features offset locating pins to prevent incorrect installation, while the BA15s base has a single-contact, symmetrical pin arrangement.
Because the 1156 and 1157 share the same 21W primary filament rating but differ in base type and filament count, substituting one for the other in the front turn signal position is not supported by these specifications.
The rear turn signal position of the Mitsubishi Mighty Max uses the 1156 bulb across all listed model years, 1983-1996, without variation.
The front turn signal position of the Mighty Max shifted from the dual-filament 1157 to the single-filament 1156 between the 1987 and 1988 model years, reflecting a change in socket type at that point in the production run.
For 1983-1987 Mighty Max models, the front and rear turn signal positions require different bulb types, with the front using the 1157 and the rear using the 1156.
For 1988-1996 Mighty Max models, both the front and rear turn signal positions use the same 1156 bulb, making the fitment uniform across both locations during those years.
The dual-filament design of the 1157 allows a single bulb to serve both a running light function at 5W and a turn signal function at 21W, whereas the single-filament 1156 serves only one lighting function per socket.