Truck-lite 30257Y3 Incandescent Side Marker Light Yellow

Product Description

The TRUCK-LITE 30257Y3 is a 12-volt incandescent side marker and clearance light designed for commercial vehicle and trailer lighting applications. Part of the 30 Series, this yellow round lamp uses a PL-10 base and a single bulb to deliver reliable marker and clearance visibility. The lens and body are constructed from ABS material. Drawing just 0.33 amps at 12 volts, it presents a minimal load on vehicle electrical systems. It ships in bulk format without a plug pre-attached, making it suitable for direct hardwire installation by fleet maintenance technicians and trailer lighting specialists.

This light is used as a side marker or clearance lamp on trailers, trucks, and commercial vehicles where DOT-compliant yellow marker lighting is required. The 2-inch round form factor fits standard marker light cutouts common on semi-trailers, flatbeds, and utility trailers. Because it ships bulk without a plug, installers select and attach the appropriate connector for the specific vehicle harness during installation. It suits both original equipment replacement and new build applications in fleet and commercial transport environments.

Key Features

• 30 Series ABS construction for durable, long-service performance
• Yellow round lens for side marker and clearance light applications
• PL-10 base with single incandescent bulb
• 12-volt operation at 0.33 amps for low electrical draw
• 2-inch diameter fits standard commercial vehicle marker cutouts
• Bulk pack, no plug included - field-wired to match vehicle harness

Compatibility

Designed as an OEM-style replacement or new-installation side marker and clearance light for 12-volt commercial vehicles, semi-trailers, flatbeds, and utility trailers using PL-10 base marker lamp sockets.

Installation Notes

Installation is typically performed by a fleet electrician or trailer lighting technician. Disconnect vehicle power before removing or installing any marker lamp. Because this unit ships without a plug, select the correct mating connector for the vehicle harness and ensure all connections are sealed against moisture intrusion. Verify compliance with applicable FMVSS and DOT marker lamp placement requirements before returning the vehicle to service.