Optronics International, a leading manufacturer of vehicle harnesses, electronic control systems and LED lighting for the global transportation industry, has announced the commercial availability of its new STL104 Series custom LED logo lights in 4-inch round format.

The new stop/turn/tail light is a low-cost alternative to Optronics’ original logo light, introduced in 2019, which made branded vehicle lighting available for the first time.

The company said the STL104 Series represents a paradigm shift in commercial vehicle lighting, democratizing custom logo technology that was previously available only to large OEMs with high-volume requirements. Optronics’ patented manufacturing process maintains all safety and visibility benefits of traditional lighting while incorporating brand elements at a cost comparable to – or even less than – standard commercial vehicle lighting options.

“The introduction of our 4-inch round STL104 Series custom logo lights expands the creative possibilities for fleet branding significantly,” said Dustin Smith, vice president of sales for Optronics International. “Unlike vinyl graphics or conspicuity tape that can fade or be damaged, these LED lights create a dynamic brand presence that attracts attention both day and night while serving their essential safety function.”

STL104 Series Features

Each STL104 Series custom logo light features 29 SMD LEDs configured specifically for its round footprint. Ten LEDs are paired with optics for optimal light output, and the remaining 19 illuminate the logo portion during stop and turn functions. 

This 4-inch stop/turn/tail light is fully FMVSS compliant for under 80-inch applications and may be used in over 80-inch applications when properly installed. It offers an industry-standard PL3 connection and grommet mounting, with other connection and mounting options available.

Concept to Delivery in 120 Days

Optronics said its manufacturing process has eliminated traditional barriers to custom lighting. The STL104 Series requires minimal setup costs and can take projects from concept to delivery in as little as 120 days. 

Minimum order quantities start at just 500 pieces, and volume-based pricing tiers begin at 2,500 units annually.

“We’ve literally put custom LED logo lighting within reach of any company that makes or operates commercial vehicles,” Smith said. “Whether it’s a large fleet looking to enhance brand recognition, a trailer or specialty vehicle manufacturer wanting to differentiate its products, or an upfitter adding value for their customers, the economics now make sense for operations of all sizes.”

Testing & DOT Compliance

The lights undergo rigorous testing to ensure they meet all DOT requirements while maintaining their aesthetic appeal. Each custom logo design is individually tested for photometric compliance, shock and vibration resistance, and all other FMVSS 108 requirements. The process begins when customers provide a high-resolution image of their logo, and Optronics’ team creates a visualization showing how the logo will appear in the light.

The applications span every sector of the commercial vehicle market, from heavy-duty fleets enhancing trailer and cab branding to work truck operations seeking to maximize brand visibility while maintaining required lighting functions. Specialty vehicle and trailer manufacturers can incorporate them into custom builds to create distinctive product differentiation.

A Branding Tool, Ready to Order Now

“From a branding perspective, the number of impressions generated by vehicles traveling America’s highways is substantial,” Smith noted. “From an operational standpoint, the price differential between the new logo lights and standard lighting is now so minimal that the branding benefit comes at virtually no premium.”

The STL104 Series 4-inch round custom logo lights are available for order now, with delivery beginning in third quarter of 2025. Like all LED products from Optronics, these lamps come with the company’s industry-leading lifetime LED warranty protection.

Optronics products are available in the U.S. and Canada through the company’s extensive distribution network of more than 30,000 convenient distribution locations.