Yahenda LED Trailer Marker Lights 20-Pack 3.9" Amber/Red — Waterproof Sealed, 3-LED

Yahenda 3.9-inch 3-LED trailer marker lights are a 20-piece set of waterproof rectangular side markers in amber and red for trailers, trucks, boats and RVs.

These Yahenda marker lights combine compact 3-LED modules, sealed construction and included mounting hardware to offer a ready-to-install solution for exterior signaling and running-light needs. The set includes both amber and red units so you can place lights where required by position, while the fully enclosed circuit and reflective lens raise visibility in low light and wet conditions.

How durable and weatherproof are these marker lights?

The lights are built with a sealed plastic housing and fully enclosed circuitry to keep moisture and road grime out, extending their service life. Micro-faceted reflectors behind the lens increase visibility without exposing internal components to the elements.

• Waterproof sealed design for wet environments
• Durable plastic housing resists cracking and deformation
• Enclosed circuit prevents dirt and corrosion
• Reflective facets amplify light output without extra power

What’s included and how easy is installation?

The package contains 20 rectangular 3-LED lights in amber and red plus 40 screws so you have spares and placement flexibility. Installation is straightforward: secure the light with the provided screws and connect the red wire to positive and the black wire to negative.

• 20 lights (amber and red mix) and 40 mounting screws
• Simple two-wire electrical hookup: red = positive, black = negative
• Pre-drilled mounting holes for quick fastening
• No special tools required beyond a screwdriver and wire connector

Will these lights work on my trailer, boat or RV?

Designed for a wide range of exterior vehicle applications, these marker lights fit common signaling positions on trailers, boats, trucks and recreational vehicles. Their compact 3.9-inch rectangular profile suits tight mounting locations while providing clear amber or red signaling as required by position.

• Suitable for trucks, trailers, boat trailers, horse trailers and RVs
• Compact 3.9-inch size fits narrow mounting spaces
• Amber for side/front applications, red for rear/side rear positions
• Low-power LEDs for longer lifespan and lower current draw

How do these lights perform at night and in traffic?

The trio of LEDs produces a bright, consistent beam complemented by the internal reflective design, improving lateral visibility for passing drivers. Because LEDs reach full brightness instantly and draw minimal current, they offer reliable signaling without dimming or long warm-up times.

• Instant-on LED illumination improves reaction times
• Reflective lens design increases perceived brightness
• Consistent light output for clearer position signaling
• Energy-efficient LEDs reduce load on vehicle circuits

Who is this for? Yahenda’s 20-piece 3.9" 3-LED marker light kit is aimed at owners and fleet managers who need an economical, ready-to-install set of exterior signal lights for multiple vehicles or large trailers. It suits DIY installers, boat owners replacing corroded markers, RV enthusiasts prepping for trips, and service shops that want a reliable bulk supply of amber and red side marker lights. These fixtures are best when you want compact, weatherproof signaling with simple mounting and wiring, and when you prefer to have spare units and screws on hand for quick replacements or multi-vehicle installs.