1157A Automotive Bulb
Description
A 1157A is a dual-filament, amber-colored automotive miniature light bulb used primarily for exterior parking, turn signal, and side marker lights.
- Color: Amber (the “A” in 1157A stands for amber, designed to shine brightly behind clear or amber lenses).
- Filaments: Two independent filaments (one dim for running/parking lights, one bright for turn signals or brakes).
- Base Type: BAY15d (index/offset double-contact bayonet base, meaning the two pins on the side are at different heights to ensure proper orientation in the socket).
- Voltage/Wattage: Standard 12.8-volt circuit running approximately 26.9/8.3 watts.
