Partsam Red 2.5in Round LED Side Marker Lights 10-Pack — 13-LED DOT-Approved Sealed Waterproof

These are Partsam 2.5-inch round red LED side marker/clearance lights — a sealed, DOT-approved 13-LED lamp sold in a 10-piece pack for 12V trailers, trucks, RVs and other vehicles.

Whether you’re updating faded incandescent markers or building a new light panel, these compact, high-output fixtures give a bright, low-draw signal that fits tight spaces. The lights arrive ready to use with a rear two-prong female connector (standard plug required but sold separately) and a weatherproof housing built to resist road spray and exposure. Designed for universal mounting around bumpers, cab kits, air cleaner bars and panel centers, they are suited to a wide range of heavy-duty and recreational vehicles.

How bright are these 13-LED marker lights compared to traditional bulbs?

The 13 LEDs deliver a focused, intense red glow while consuming much less power than comparable incandescent lamps. You’ll notice improved visibility at night and in poor weather without adding significant electrical load to your vehicle. Their small footprint concentrates light where you need it for side-marking and clearance functions.

• 13 high-efficiency LEDs for strong, consistent illumination
• Low current draw extends vehicle power availability
• Red lens tuned for DOT-compliant signaling
• Compact 2.5" diameter fits limited mounting spaces

Are these lights easy to install on my trailer or truck?

Installation is straightforward: each lamp has a built-in two-prong female socket on the rear that accepts industry-standard two-prong plugs (plugs and grommets sold separately). Many users mount them in existing holes or install them into a grommet for a clean, flush fit; surface and panel mounting are also possible depending on your setup. No complex wiring or resistors are required when replacing like-for-like incandescent fixtures on 12V systems.

• Two-prong female connector for common trailer wiring harnesses
• Grommet-mount compatible for secure, vibration-resistant fit
• Direct replacement for many incandescent marker locations
• Works with standard 12V vehicle electrical systems

Will these markers hold up to road conditions and weather?

The housings are sealed to keep out moisture and road debris so they withstand routine exposure to rain and spray. The LED technology also resists shock and vibration better than filament bulbs, reducing the need for frequent replacements. DOT approval indicates they meet visual and performance expectations for road use when mounted appropriately.

• Sealed construction repels water and particulates
• Durable LED assemblies tolerate vibration and impacts
• Red polycarbonate lens resists UV and cracking
• DOT-approved for compliant on-road signaling

What vehicles and mounting locations commonly use these 2.5" LEDs?

These compact red markers are widely used across trucks, trailers, RVs and agricultural equipment where space is limited or extra visibility is needed. They’re a common choice for air cleaner light bars, cab and sleeper kits, bumpers, rear center panels, and side marker rows. Compatible with many makes including heavy-duty manufacturers when wired to the correct 12V circuit.

• Utility, dump, and travel trailers
• Commercial trucks, tractors, and vans
• RVs and motorhomes for clearance and side marking
• Aftermarket light panels, bumpers, and cab kits

Who this is for: Installers, fleet managers and DIY vehicle owners who need compact, reliable red side marker or clearance lights that meet DOT guidelines. If you want low-maintenance, energy-efficient markers that fit tight mounting spaces and provide visible signaling on highways and work sites, this 10-pack from Partsam is built to be a practical, weather-resistant replacement or upgrade.