5624130 - 4 Inch Round Combination Stop/Turn/Tail & Backup Light (Light Only, Sold in Multiples of 10)

Buyers Products 4 Inch Round Stop/Turn/Tail and Backup Light is used on trucks and trailers to meet FMVSS/CMVSS 108 regulations. The light is a convenient and efficient way to get a red stop/turn/tail and clear backup light in a single fixture. It uses a PL-3 connection for the stop/turn/tail light and a PL-2 for the backup. Lights are sold in quantities of 10 and backed with a limited lifetime warranty.

Specifications

The Buyers Products 4 Inch Round Combination Stop/Turn/Tail & Backup Light represents a meticulously engineered solution for commercial vehicle illumination, integrating multiple critical safety functions into a single, compact unit. Designed specifically for heavy-duty trucks, trailers, and various utility vehicles, this lighting fixture is an exemplary demonstration of advanced automotive lighting technology aimed at enhancing operational safety, simplifying installation processes, and ensuring compliance with stringent regulatory mandates. Its robust construction and intelligent design cater to the rigorous demands of commercial applications, where durability, reliability, and performance are paramount.

This innovative combination light consolidates the functionality of a red stop light, turn signal, tail light, and a clear backup light within a standard 4-inch round form factor. This integration provides a significant advantage over traditional systems requiring separate lights for each function. By combining these essential signals, fleet operators and vehicle manufacturers can achieve a streamlined aesthetic, reduce the number of discrete components, and minimize the complexity of wiring harnesses. This not only contributes to a cleaner vehicle appearance but also significantly lowers material costs and installation labor hours. The reduced number of cut-outs required in the vehicle's bodywork also maintains structural integrity more effectively.

Central to the design philosophy of this lighting unit is its unwavering adherence to Federal Motor Vehicle Safety Standard (FMVSS) 108 and Canadian Motor Vehicle Safety Standard (CMVSS) 108. These regulatory frameworks are foundational to vehicle safety in North America, dictating the performance, placement, and visibility requirements for all lighting equipment on motor vehicles and trailers. FMVSS 108, "Lamps, Reflective Devices, and Associated Equipment," sets forth minimum photometric requirements, color specifications, and physical characteristics for various lighting functions, including stop lamps, turn signal lamps, tail lamps, and backup lamps. Compliance with these standards is not merely a legal obligation but a critical factor in ensuring that vehicles are clearly visible to other road users, thereby reducing the risk of accidents. The red stop/turn/tail portion of the light provides essential warnings for braking, directional changes, and vehicle presence during night operation, while the clear backup light offers crucial illumination for safe reversing maneuvers, especially in low-light conditions or confined spaces. By meeting these rigorous standards, the Buyers Products combination light ensures that vehicles equipped with it operate safely and legally across North American roadways.

The physical attributes of this 4-inch round light are engineered for maximum resilience and longevity. Both the housing and the lens are constructed from high-grade polycarbonate, a material renowned for its exceptional impact resistance, thermal stability, and optical clarity. Polycarbonate is considerably more durable than traditional acrylic or glass, making it highly resistant to chips, cracks, and impacts from road debris, which is a common hazard in commercial transport environments. Furthermore, polycarbonate exhibits excellent resistance to UV radiation, preventing yellowing or clouding over time, which can degrade light output and aesthetic appeal. This material choice ensures that the light maintains its photometric performance and visual integrity throughout its operational lifespan, even when exposed to harsh sunlight and environmental elements. The recessed mount type facilitates a flush, integrated installation into standard 4.5-inch grommets, a common practice in the industry, further protecting the light from external damage and contributing to its sleek, low-profile design.

Environmental protection is a critical consideration for vehicle components, and this combination light boasts an impressive IP67 ingress protection rating. The "IP" in IP67 stands for Ingress Protection, with the first digit (6) indicating protection against solid objects and the second digit (7) indicating protection against liquids. An IP67 rating signifies that the light is completely dust-tight, preventing the entry of any dust particles that could impair its function or longevity. More critically for exterior vehicle components, the "7" indicates protection against the effects of temporary immersion in water, specifically up to 1 meter (3.3 feet) for 30 minutes. This level of sealing ensures that the internal electronics and light sources are thoroughly protected from moisture, rain, snow, road spray, and even pressure washing, making it ideally suited for demanding outdoor applications and environments where exposure to water is inevitable. This superior sealing significantly extends the lifespan of the light by preventing corrosion and short circuits, common failure modes in less robust lighting solutions.

Operational reliability across a broad spectrum of climatic conditions is guaranteed by the light's specified operating temperature range of -40°C to 149°C (-40°F to 300°F). This extreme temperature resilience means the light will perform consistently and reliably whether operating in the intense cold of arctic winters or the scorching heat of desert summers. The selection of materials, including the polycarbonate housing and lens, as well as the internal electronic components and seals, are all chosen to withstand these thermal extremes without degradation in performance, structural integrity, or light output. This feature is particularly vital for vehicles engaged in long-haul transportation or specialized operations across diverse geographical regions.

Powering this sophisticated lighting unit is a 12-volt electrical system, which is the industry standard for the vast majority of commercial vehicles, including heavy-duty trucks, trailers, and utility vehicles. This common voltage ensures broad compatibility and simplifies integration into existing vehicle electrical architectures. With a wattage rating of 4.3 watts, this combination light exemplifies energy efficiency, a crucial factor in modern vehicle design. The low power consumption is indicative of advanced LED technology, which, while not explicitly stated in the provided specifications, is the prevailing technology for such efficient and long-lasting lighting solutions. LED lights consume significantly less power than traditional incandescent bulbs, reducing the load on the vehicle's electrical system, decreasing fuel consumption slightly, and ultimately contributing to lower operational costs over the vehicle's lifespan. The efficiency of LED technology also translates to superior brightness and quicker illumination response times, further enhancing safety.

Connectivity is streamlined through the use of industry-standard plug connections. The stop/turn/tail functions utilize a PL-3 connection, while the backup light function employs a PL-2 connection. These plug types are widely recognized and utilized within the commercial vehicle industry for their reliability and ease of installation and maintenance. The PL-3 (Packard/Delphi Weather-Pack equivalent or similar) and PL-2 connectors are designed for robust electrical contact and environmental sealing, ensuring secure connections that resist vibration, moisture, and corrosion. The plug-and-play design significantly reduces installation time compared to hardwired alternatives, requiring only a simple push-in connection to a mating harness. This facilitates rapid assembly on the production line for OEMs and simplifies field replacements for maintenance crews, minimizing vehicle downtime and associated labor costs. The distinct connectors for the STT and backup functions also prevent incorrect wiring, ensuring that each function operates as intended.

Measuring 4.33 inches in both height and depth (which for a round light indicates diameter and depth from the mounting surface), the compact dimensions of this light allow for flexible placement options on a wide range of vehicle types. Its uniform size adheres to common industry standards for round lamps, making it a versatile choice for new installations or as a direct replacement for existing 4-inch round lights, regardless of whether they were previously single-function or older combination units. This interoperability is a major benefit for fleet managers looking to standardize their lighting components across diverse vehicle models and ages.

This combination light is an ideal solution for a multitude of commercial and industrial applications. It is perfectly suited for original equipment manufacturers (OEMs) building new trucks and trailers, providing a high-quality, compliant, and cost-effective lighting solution that meets current industry demands. For fleet operators, it serves as an excellent upgrade or replacement component, offering enhanced safety, improved durability, and reduced maintenance requirements compared to less advanced lighting systems. Specific applications include: heavy-duty semi-trucks (Class 8), commercial trailers of all types (dry vans, reefers, flatbeds, tankers), dump trucks, refuse vehicles, construction equipment (excavators, loaders, dozers), agricultural machinery, utility service vehicles, municipal fleets, and emergency support vehicles. The versatility of integrating both primary rearward illumination and backup lighting into one unit simplifies vehicle design and improves overall functionality.

The product is sold in quantities of 10, a strategic decision that caters specifically to the needs of commercial customers, fleet purchasing departments, and large-scale repair facilities. Purchasing in multiples offers several advantages, including economies of scale, leading to better unit pricing, and streamlined inventory management. For businesses that operate or maintain a fleet of vehicles, having a readily available stock of common replacement parts like these combination lights ensures minimal downtime during repairs, contributing to greater operational efficiency. This bulk packaging strategy underscores Buyers Products' understanding of the commercial market's unique procurement and operational requirements.

Reinforcing the manufacturer's confidence in the superior quality and robust design of this product is a limited lifetime warranty. A limited lifetime warranty in the commercial products sector is a strong testament to the product's engineering and material excellence, signaling that the manufacturer stands behind its durability and performance for the operational life of the product under specified conditions. This provides significant peace of mind to purchasers, knowing that their investment is protected against defects in materials or workmanship for an extended period. For fleet managers, this warranty translates into reduced total cost of ownership (TCO) by mitigating future replacement costs and unexpected expenditures, further solidifying the value proposition of this advanced lighting solution.

In summary, the Buyers Products 4 Inch Round Combination Stop/Turn/Tail & Backup Light is more than just a lighting component; it is an integrated safety system engineered for the most demanding commercial environments. Its fusion of essential signaling functions, adherence to critical regulatory standards, construction from advanced materials like polycarbonate, superior ingress protection (IP67), wide operational temperature range, energy efficiency, and user-friendly plug-and-play connectivity collectively establish it as a leading choice for vehicle lighting. Backed by a limited lifetime warranty and available in convenient bulk quantities, this light delivers unparalleled performance, reliability, and value, ensuring enhanced safety and operational efficiency for all commercial vehicles on which it is installed.