What Are Round Tail Lights?

Round tail lights are circular-shaped automotive lighting assemblies that serve multiple critical functions on trucks, trailers, and commercial vehicles. These multifunctional lights typically integrate stop, turn, tail, and backup lighting into a single, streamlined unit. Available in popular sizes, round tail lights offer a classic, versatile design that fits a wide range of vehicle applications.

Unlike traditional incandescent bulbs, modern round LED tail lights use advanced light-emitting diode technology to deliver superior brightness, instant activation, and exceptional durability. With configurations ranging from 12 to 24 high-intensity LEDs per light, these assemblies provide outstanding visibility that meets rigorous safety standards while consuming up to 90% less energy than conventional lighting.

Key Benefits of Round LED Tail Lights

Superior Visibility and Safety

Round LED tail lights significantly enhance road safety through:

• Instant activation – LEDs illuminate instantly, giving following drivers crucial extra reaction time
• High-intensity illumination – 12, 16, or 24 LED configurations provide brilliant visibility up to 1,000+ feet
• All-weather performance – Maintains brightness in rain, snow, fog, and extreme temperatures

Energy Efficiency and Longevity

• 25,000+ hour lifespan – Up to 25 times longer than incandescent bulbs
•  Energy savings – Reduces strain on your vehicle’s electrical system
• Shock and vibration resistant – Built to withstand harsh road conditions

Easy Installation and Maintenance

• Plug-and-play compatibility – Direct replacement for most existing round tail lights
• Universal mounting options – Surface mount, flush mount, or grommet mount configurations
• Waterproof sealing – IP67, IP68 or IP69 rated for submersible applications

Types and Functions

Stop/Turn/Tail (STT) Lights

Multi-function lights that combine (model dependent):

• Tail function – Constant low-intensity illumination when headlights are on
• Brake/Stop function – High-intensity red illumination when brakes are applied
• Turn signal function – Flashing amber or red indication for directional changes

Vehicle Compatibility

Our round tail lights are compatible with a wide range of American vehicles including:

• Semi-trucks and tractor-trailers
• Utility and work trucks
• Delivery vehicles
• School buses and transit vehicles
• Agricultural equipment
• Construction vehicles
• Heavy-duty trucks

Installation Guide

Preparation

• Disconnect vehicle battery for safety
• Remove existing tail light assembly
• Clean mounting surface and inspect wiring

Mounting

• Install rubber grommet in mounting hole
• Insert light assembly and secure with provided hardware
• Ensure waterproof seal is properly seated

Testing

• Reconnect battery and test all functions
• Verify proper operation of stop, turn, and tail lights
• Check for proper alignment and secure mounting

Design Considerations

Freedom Black Raven Series

The Freedom Black Raven tail light embodies a bold fusion of functionality and cutting-edge style, redefining the classic 3-chamber tail light. Its distinctive round shape, smooth profile, and striking black finish set a new benchmark for truck and trailer design. Each element has been carefully crafted to enhance both performance and aesthetics.

Key Features:

• Chrome honeycomb reflector design
• IP6K9K waterproof rating
• E-approved according to ECE R148 (R6 and R7)
• Surface mount or flush mount options
• 6’7″ (2M) cable for easy installation

Dark Knight IZE LED Series

The IZE LED Series redefines lighting design by combining cutting-edge innovation with unparalleled style. As our best-selling light, it offers versatile options in both rectangular and round lights with clear-tinted, dark, or red lens choices. Each option is crafted to meet diverse functional needs while making a bold visual statement.

Engineered to adapt seamlessly to various vehicles, the IZE LED Series is fully E-approved, ensuring compliance and reliability. Installation is designed to be straightforward, offering a hassle-free experience that pairs perfectly with its high-performance standards.

Technical Specifications:

• E-approved
• Multiple mounting options available
• 25,000+ hour LED lifespan

Technical Specifications

Electrical Requirements

• Operating Voltage: 12-24V DC
• Current Draw: 0.1-0.3 amps (depending on LED count)
• Power Consumption: 2-8 watts (vs 20-25 watts incandescent)
• Polarity: Protected against reverse polarity

Physical Construction

• Lens Material: UV-resistant polycarbonate or PMMA
• Housing: ABS plastic or die-cast aluminum
• Seal Rating: IP67. IP68. IP69
• Vibration Resistance: Yes

Maintenance and Troubleshooting

Regular Maintenance

• Clean lens monthly – Use mild soap and water to maintain optimal light output
• Inspect seals annually – Check waterproof gaskets for wear or damage
• Test all functions quarterly – Verify stop, turn, and tail light operation
• Check mounting security – Ensure lights remain firmly attached

Common Issues and Solutions

Flickering Lights:

• Check connections for corrosion or looseness
• Verify proper grounding
• Inspect wiring for damage

Dim Output:

• Clean lens surface of dirt and oxidation
• Check voltage at light assembly
• Verify LED array is not damaged

Complete Failure:

• Test power supply with multimeter
• Check fuses and relays
• Inspect wiring harness for breaks

Water Ingress:

• Replace damaged gaskets or seals
• Ensure proper mounting and alignment
• Check for cracked lens or housing

Frequently Asked Questions

What size round tail lights do I need for my truck?

The most common sizes are 4-inch for light-duty trucks and trailers, 5.5-inch for medium-duty applications, and 6-inch for heavy-duty commercial vehicles. Check your existing lights or mounting holes to determine the correct size.

How many LEDs should my round tail lights have?

LED count varies by application: 12 LEDs for basic applications, 16 LEDs for standard visibility, and 24 LEDs for maximum brightness and commercial use. More LEDs generally provide better visibility and redundancy.

Are LED round tail lights worth the upgrade from incandescent?

Yes, LED lights offer significant advantages: 90% energy savings, 25,000+ hour lifespan, instant activation, superior brightness, and better durability. The initial investment typically pays for itself through reduced maintenance and energy costs.

Can I install round tail lights myself?

Most round tail lights are designed for plug-and-play installation using existing wiring and mounting points. Basic tools and electrical knowledge are recommended. Always disconnect the battery before beginning installation.

What’s the difference between surface mount and flush mount?

Surface mount lights sit on top of the mounting surface with the entire assembly visible. Flush mount lights are recessed into the mounting surface for a cleaner appearance. Choose based on your vehicle’s design and mounting provisions.

How do I know if my round tail lights are waterproof?

Look for IP67, IP68 or IP69 rating, which indicates submersible waterproof protection. Quality lights will have sealed lens assemblies, rubber gaskets, and proper cable entry sealing.

Customer Considerations

When choosing round tail lights for your vehicle, consider:

Performance Requirements

• Visibility needs – Highway driving requires brighter lights than city applications
• Environmental conditions – Marine, construction, or extreme weather exposure
• Duty cycle – Commercial vehicles need more durable construction

Aesthetic Preferences

• Lens style – Clear, red tinted, or smoked options
• Housing finish – Black, chrome, or color-matched options
• LED pattern – Traditional or modern styling

Budget Considerations

• Initial cost vs long-term savings from LED efficiency
• Installation complexity – Professional installation may be required
• Warranty coverage – Look for comprehensive protection

Vehicle Integration

• Electrical compatibility – Ensure proper voltage and current ratings
• Physical fit – Verify mounting dimensions and cable length
• Regulatory compliance – Meet local vehicle code requirements

Our round tail lights represent the perfect balance of cutting-edge technology, proven reliability, and distinctive style – engineered to meet the demanding requirements of today’s truck owners and fleet operators.