Nilight Side Marker Lights 10PCS 3.9" Red & Amber — 3-LED Weatherproof Low-Profile Clearance Lights

Nilight 10PCS 3.9" 3-LED Side Marker Lights are compact, weatherproof red and amber clearance lights designed to upgrade visibility and styling on trucks, trailers, RVs, and other 12V vehicles.

These marker lights pack three high-quality piranha LEDs into a small, sonically welded housing with a faceted reflector for stronger perceived brightness and a refined look. Ready to mount on any 12V pickup, trailer, van, caravan, boat, or bus, the set includes ten 3.9-inch fixtures in red and amber finishes to meet side, front, rear, or roof clearance needs while resisting moisture and road vibration.

How do these lights improve visibility and appearance?

The trio of upgraded piranha LEDs and the micro-reflex faceted reflector focus and spread light efficiently, producing a clearer amber or red signal at night and in poor weather. Their compact profile also adds a clean, modern accent to vehicle edges without bulky housings.

• Three high-intensity piranha LEDs per lamp for strong, consistent output
• Micro-reflex faceted reflector enhances perceived brightness
• Low-profile 3.9" diameter fits tight mounting locations
• Available in standard red and amber for required signaling

What makes these lights durable in outdoor and marine conditions?

Nilight constructs each lamp with sonic-welded lens and housing and additional surface sealing on LEDs to prevent water ingress and corrosion. The design withstands vibration and road debris, providing long-term service on trailers, trucks, and recreational vehicles.

• Sonic welding bonds lens and housing into a single sealed unit
• Surface-sealed LEDs add internal moisture protection
• Heat-dissipating LED design reduces component wear
• Suitable for constant exposure to road and marine environments

How easy is installation and wiring?

Installation is straightforward: mount the black base with the supplied flat-head screws, snap the light into place, and connect the red wire to +12V and the black wire to ground. If you want wiring through the rear rather than a center hole, use washers under the base to create a channel for the lead.

• Simple two-wire hookup: red = positive, black = ground
• Mount base with included screws; snap light into the base
• Option to drill a center hole or run wire through base using washers
• Designed for quick retrofit on most 12V vehicles

What electrical and performance specs should I expect?

These lights are optimized for 12V systems common on trucks, trailers, RVs, and boats. The upgraded LEDs deliver broader beam angles and improved heat management compared with basic marker bulbs, translating to longer life and steady performance under load.

• Compatible with standard 12V vehicle electrical systems
• Upgraded LEDs for better heat dissipation and longer life
• Wider lighting angle for more visible signaling
• Designed for consistent output in varied driving conditions

Who is this for: Vehicle owners, fleet operators, and DIY mechanics who need compact, long-lasting side marker and clearance lights for pickups, trailers, RVs, campers, vans, boats, and buses. If you want a low-profile, weatherproof red or amber indicator light that’s easy to mount and reliably visible at night, this 10-piece Nilight kit is a practical, cost-effective upgrade.