Nilight Cab Marker Lights for 2017–2021 Ford Super Duty — Smoked Lens, 9-LED Amber 5-Pack, Weatherproof

Nilight 9 LED smoked cab marker light is a direct-fit amber roof marker replacement designed for 2017–2021 Ford Super Duty trucks, delivering brighter, longer-lasting illumination with sealed, weatherproof construction.

These smoked-lens cab marker lights replace the OEM roof marker lamps on Ford F250, F350, F450 and F550 Super Duty pickups from 2017 through 2021. Each unit uses upgraded 3528 LEDs for stronger amber output and improved heat management, while the PC lens and ABS base are sealed to keep out moisture. The kit comes with five lights, mounting hardware and straightforward wiring instructions so you can restore or upgrade your truck's clearance lighting quickly.

How do these lights improve visibility for my Super Duty truck?

The upgraded 3528 LED chips produce a clearer, more consistent amber signal than many older incandescent or low-grade LED markers. That helps other drivers spot your vehicle's roofline at night and in poor weather without drawing excess current.

• 16 quality 3528 LEDs per lamp for higher intensity
• Wider beam angle to enhance side and forward visibility
• Lower power draw compared with incandescent bulbs
• Smoked lens maintains a subdued daytime look while showing amber when lit

Are these cab marker lights weatherproof and durable?

Yes. The lights are engineered with a tightly fitted PC lens bonded to an ABS base and extra sealant at the wiring entry, giving a fully sealed housing that resists water intrusion and road contaminants. That construction extends service life and reduces failure from moisture-related issues.

• PC lens and ABS base fused for a waterproof seal
• Additional glue at the wiring point for complete sealing
• LEDs provide better heat dissipation and lifespan than bulbs
• Durable materials suitable for truck roof exposure

Is installation difficult on 2017–2021 Ford Super Duty trucks?

Installation is designed to be straightforward for trucks that originally came with cab marker lights: these are plug-and-play direct replacements for the OEM lamps. For trucks without factory roof lights, you will need to drill mounting holes and wire the lamp into your truck’s electrical system using the included hardware.

• Direct replacement for OEM-installed cab marker lights
• Plug-and-play on trucks with factory wiring harnesses
• Drill-and-wire installation instructions included for blank roofs
• Black lead to negative and red lead to positive when hard-wiring

What does the package include and how many lights come in a set?

The kit contains five smoked-lens amber marker lights—enough for a full cab marker set—plus the mounting screws and flat washers needed for installation. The components are packaged together so you receive a complete replacement solution in one box.

• 5 smoked-lens amber marker lights (complete set)
• Mounting screws and flat washers included
• Preassembled wiring pigtails on each lamp for easy hookup
• Instructions for both plug-and-play and hard-wired installs

Who is this for: This Nilight cab marker light set suits Ford Super Duty owners (2017–2021 F250/F350/F450/F550) who need a reliable, weatherproof replacement or upgrade to OEM roof markers. It's aimed at truck drivers who want enhanced amber visibility, simple installation on factory-equipped trucks, and a smoked, low-profile look when lights are off. Professional installers and DIY enthusiasts who will hard-wire blank roofs will also find the included hardware and guidance helpful.