This is a two-pin automotive bulb designed for trucks and special equipment with a 24-volt on-board system. It is used for brake/sidelight applications and has a BAY15d metal base and a power rating of 21/5W.
Main specifications (SCT 202358):
Type: S25 (P21/5W).
Voltage: 24 V.
Power: 21 W (brightness) / 5 W (sidelight).Socket: BAY15d (two-pin, pins at different heights).
Application: Brake lights, parking lights, and turn signals in trucks.
This type of bulb ensures high reliability and durability in the vibration-prone environments common in commercial vehicles