Partsam 4" LED Rectangular Marker Lights - Set of 4 (2 Red, 2 Amber) DOT-Certified, Waterproof 12V

These slim, weatherproof LEDs are designed to replace standard side marker and clearance lamps on RVs, campers, trailers, trucks and other 12V vehicles. Each light houses six high-efficiency LEDs inside a snap-on, replaceable lens and ships with mounting screws and two center-exit wires for a straightforward hardwire installation. Built to DOT specifications, the set includes two red and two amber lamps sized for common mounting locations on trailers and motorhomes.

How do these lights install on my RV or trailer?

Installation is direct and hardwired: the lights come with two center-mounted wires (red = positive, black = ground) and include screws for surface mounting. Because the lens and housing are sonically sealed into one waterproof unit, you only need to drill mounting holes and connect the wires to your 12V circuit.

• Hardwired with two wires emerging from center for tidy routing
• Mounting hole spacing: 75 mm (3") for common bracket patterns
• Overall light size: 101 mm x 49 mm x 23 mm (4" x 2" x 1")
• Includes screws and requires basic hand tools for fitment

Are these lights durable enough for exterior use on road vehicles?

Yes — the lights are built as sealed one-piece units that resist moisture and contaminants, making them suitable for exterior mounting in exposed positions. The sonically sealed lens and housing eliminate separate gaskets, reducing potential leak points.

• Waterproof, single-unit lens and housing design
• Snap-on replaceable lens for later maintenance
• Rugged ABS-style housing designed for road and marine environments
• DOT certified for compliant exterior lighting on highways

What visibility and wiring features should I expect?

Each rectangle contains six LEDs for clear, consistent illumination; the two colors included (red and amber) match standard side marker and clearance lamp requirements for trailers and motorhomes. The two-wire system simplifies power and ground hookup without additional connectors.

• Six LEDs per unit for bright, even light output
• Two red and two amber lamps to meet side/front/rear placement needs
• Black wire = ground, red wire = positive for intuitive wiring
• Designed for 12V vehicle electrical systems (cars, trucks, RVs, boats)

Will these lamps fit my vehicle’s mounting pattern and legal requirements?

The compact 4" x 2" profile and 3" hole spacing suit many aftermarket and OEM mounting points commonly found on trailers, RVs and trucks. DOT approval helps ensure the lights meet regulatory standards for marker and clearance lamps where required.

• Light dimensions: 101 mm x 49 mm x 23 mm (4" x 2" x 1")
• Hole distance: 75 mm (3") matches many factory patterns
• DOT certified for compliant use as side marker/clearance lights
• Universal 12V compatibility across a wide range of vehicles

Who is this for? These Partsam rectangular LED marker lights are aimed at DIY vehicle owners, fleet managers and repair shops needing a reliable, low-profile replacement for worn or noncompliant side marker and clearance lamps. They fit pickups, trailers, caravans, RVs, motorhomes, buses and many utility vehicles that use 12V lighting, and are practical when you need bright, weatherproof illumination plus straightforward hardwire mounting.