Truck-Lite’s 1.25” Marker & Clearance Light - Built for Performance. Designed for Ease.
For over 70 years, Truck-Lite has led the way in lighting & harness solutions with a relentless commitment to excellence - delivering unmatched performance, durability, and innovation that sets the standard for commercial transportation.
Featured Products: 34 Series
Truck-Lite’s 34 Series LED Marker & Clearance Light is a next-generation upgrade for the specialty trailer market. With a sleek, modern design and enhanced light output, this 1.25” round light delivers unmatched visibility while simplifying installation.
Why Choose the 34 Series?
- Reliable Durability – Featuring a polycarbonate lens, 30x stronger against impact than acrylic, for long-lasting reliability.
- Advanced Protection – Internal circuitry is fully encapsulated in epoxy, shielding against corrosion, water, and vibration.
- Maximum Brightness– The brightest possible legal light output, ensuring a clear, even glow.
- Efficient & Compliant – PC rated for 180-degree visibility, allowing one lamp instead of two for legal compliance.
- Effortless Installation – Hardwired for easy retrofit, saving time and hassle.
- Dual Function Capability– Acts as an auxiliary stop/turn light, enhancing trailer safety.

Available in Red and Yellow with single or dual function options, plus a clear lens choice for a distinctive look.
Featured Products: 99 Series Harness System
Truck-Lite’s 99 Series harness system is designed as a closed system integrating a molded plug with two points of seal.
Why Choose the 99 Series?
- Multi-Sealed Corrosion Defense- Featuring a two-seal plug system that keeps moisture and debris out of the plug, guarding against corrosion.
- Plug Protection - Male and female plugs supplied with caps to hold grease in and keep debris out until installed.
- Fast Installation- Trapezoid-shaped connector eliminates guesswork by making installation quick and easy, allowing operator to confidently achieve proper pin alignment and a positive lock compared to typical round cable connectors.
- Reliability in the Field- Mounting bracket stabilizes the connection and eliminates flex under vibration.


The 34 Series and 99 Series are just a few of the products Truck-Lite proudly designs, engineers, and manufactures in Pennsylvania.
Truck-Lite Co., LLC, a Clarience Technologies company, is a global technology leader focused on forward and safety lighting, wiring harnesses, turn signals and safety accessories for the medium- and heavy-duty truck, trailer, off-road and commercial vehicle industries. The company is headquartered in Erie, PA, with additional U.S. facilities in Coudersport, McElhattan and Wellsboro, PA and international facilities in Harlow, England and Puebla, Mexico. Learn more at .
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