Nilight 3.9" 3-LED Side Marker Lights 10-Pack — Red & Amber, Weatherproof 12V

Nilight 3.9" 3-LED side marker lights are compact, weatherproof clearance indicators for trucks, trailers, RVs and vans, sold as a 10-piece set in red and amber.

These low-profile 12V marker lights provide bright, focused illumination with a micro-reflex reflector and three upgraded Piranha LEDs in each housing. Built for exterior vehicle use, they combine durable sealing, easy surface-mount installation and clear color options so you can meet visibility or clearance requirements without complex wiring or bulky fixtures.

How bright and visible are these lights on the road?

The lights use three high-efficiency Piranha LEDs plus a faceted reflector that concentrates output for better on-road visibility. You’ll get a stronger, wider beam than a single LED marker, with consistent red or amber color that stands out at dusk or in wet conditions.

• Three upgraded LEDs per lamp for increased luminosity
• Micro-reflex faceted reflector enhances perceived brightness
• Available in standard red and amber for front/rear or side clearance

Will these hold up to weather, vibration and everyday abuse?

Nilight seals each unit by sonic welding the lens and housing as a single assembly, and the LEDs are surface-sealed to guard against moisture. The rugged build and corrosion-resistant components make them suitable for trailers, pickups, RVs and marine applications where exposure and vibration are common.

• Sonic-welded lens and housing for moisture protection
• Surface-sealed LEDs to resist water intrusion and corrosion
• Durable materials designed for road and outdoor use

How simple is the installation and wiring process?

Installation is straightforward: each light snaps into a black base that mounts with the included flat-head screws. The wiring uses a simple two-conductor arrangement — red for positive and black for ground — and you can route the lead through the back by drilling a center hole or using washers to create a gap.

• Base mounts with supplied flat-head screws for secure attachment
• Red/black wire leads (red = +, black = -) for simple 12V hookup
• Option to run wires through a center hole or use washers for clearance

What sizes, colors and applications suit these markers?

Each lamp measures about 3.9 inches and is sized to function as a marker, clearance or indicator light on a wide range of vehicles. Use amber for front/side positions or red for rear/side locations; the kit is suitable for pickups, trailers, vans, buses, RVs and boats that need low-profile lighting.

• Compact 3.9" diameter fits tight or visible mounting locations
• Red and amber options to meet different positioning needs
• Versatile applications: trucks, trailers, RVs, campers, boats

Who is this for? Installers, fleet owners, DIY van lifers and trailer builders who need reliable, compact clearance lights will appreciate this Nilight 10-piece set. It’s tailored to anyone seeking bright, weatherproof marker lights with easy installation and consistent color output for improved vehicle visibility and regulatory compliance on the road.