1157 Automotive Bulb
Description
A 1157 automotive bulb is a standard dual-filament, 12-volt incandescent light bulb widely used in vehicles for dual-function exterior lights like brake/tail lights or turn signal/parking lights.
- Dual Filaments: It has two independent filaments (usually rated around 21/5 watts or 23/8 watts) that allow for two levels of brightness—a dim setting for running lights and a bright setting for brakes or turn signals.
- Base Design: It features a double-contact bayonet base (BAY15d) with two distinct bottom contact points and staggered or offset mounting pins on the side to ensure correct insertion into the socket.
