The Optronics MCL40 LED Rectangular Marker Light is a compact, high-visibility LED marker and clearance light designed for trailers, trucks, RVs, and utility vehicles. With its 4" x 1.5" rectangular profile and standard 3" mounting centers, it serves as an easy upgrade or replacement for many common trailer marker lights.

This durable LED marker light is available in two lens color options to meet DOT trailer lighting requirements:

• Red Marker Light – typically used for rear or side rear clearance lighting

• Amber Marker Light – typically used for front or side front clearance lighting

Both versions feature a rugged surface-mount white base with a snap-on replaceable lens, making installation and service quick and simple.

The light contains two bright LEDs that provide excellent visibility while drawing very little power from your trailer’s 12-volt electrical system. A built-in reflex reflector eliminates the need for a separate reflector, helping keep your trailer DOT compliant.

Constructed with a durable acrylic lens and ABS housing, the MCL40 is sonically sealed to protect the electronics from water, road debris, and vibration.

Available Variants

Both variants share the same housing, mounting pattern, and wiring configuration.

Key Features

Bright LED Marker / Clearance Light
Two high-output LEDs provide excellent visibility.

Available in Red or Amber
Choose the correct color to meet trailer lighting requirements.

Built-In Reflex Reflector
Lens eliminates the need for a separate reflector.

Surface Mount Design
White base mounts on standard 3" centers.

Two-Wire Connection
Power and ground wires allow installation on any surface.

Snap-On Replaceable Lens
Quick service without replacing the entire light.

Sealed Waterproof Housing
Protects against road spray, dust, and vibration.

Specifications

Cross Reference – Replacement Marker Lights

The MCL40 LED marker light replaces several common trailer clearance lights with similar dimensions.

Common cross references include:

• Optronics MC65RB / MC65AB

• Peterson 426 Series marker lights

• Bargman 30 Series clearance lights

• Truck-Lite 10250 marker lights

• Grote 45263 marker lights

These lights share similar 4" x 1.5" thinline dimensions with 3" mounting centers, making the MCL40 a popular LED upgrade for older incandescent lights.

Common Applications

The Optronics MCL40 LED marker light is commonly installed on:

• Enclosed cargo trailers

• Utility trailers

• Equipment trailers

• Dump trailers

• RV campers

• Commercial trucks

Its compact design allows installation where space is limited but reliable marker lighting is required.

Why Upgrade to LED Trailer Marker Lights?

LED lighting provides major advantages over traditional incandescent lights:

✔ Brighter illumination
✔ Longer lifespan
✔ Lower power consumption
✔ Better vibration resistance
✔ Waterproof sealed electronics

Available at AAA Trailer

AAA Trailer supplies trailer lights, axles, brakes, wheels, electrical components, and trailer hardware for trailer owners across the United States.

📞 Call/Text: 517-225-1991 🌐 AAATrailer.com

What sets us apart is our dedicated team of knowledgeable professionals who are always ready to assist. Great customer service isn't just a promise—it's the foundation of our success. We invite you to visit our showroom or reach out for personalized advice. Whether you're purchasing online or stopping by, we're here to make your trailer journey seamless. Visit Us Today

• Address: 4675 East Grand River Ave, Howell, MI 48843
• Phone: (517) 225-1991 (Call or text)
• Hours: Monday to Friday: 10:00 AM - 5:30 PM | Saturday: By appointment

Thank you for considering AAA Trailer. We're excited to help you hit the road with confidence! If you have any questions, don't hesitate to contact us.

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 We will be happy to assist you with eligible returns, the return instructions, and the shipping address. If you need a return or exchange, send us an email so we can discuss a replacement.