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

Nilight 9 LED smoked cab marker lights are a direct-fit amber roof clearance upgrade designed for 2017–2021 Ford Super Duty trucks, offering brighter, more durable illumination with a sealed, weatherproof construction.

These smoked-lens cab marker lights replace the factory roof lights on Ford F250, F350, F450 and F550 Super Duty pickups from model years 2017 through 2021. Built with 9 compact housings using upgraded 3528 LEDs, the set delivers higher light output and improved heat dissipation compared with basic bulbs. The integrated PC lens and ABS base are glued and sealed to resist moisture, while the plug-and-play design simplifies installation for trucks that already have OEM cab marker wiring. If no factory holes exist you'll need to drill and hardwire using the included screws and hardware.

How do these Nilight cab marker lights perform compared with OEM markers?

The Nilight units use multiple 3528 LEDs in each light to increase intensity and extend service life versus typical incandescent or low-grade LED markers. Their wider beam pattern improves visibility across the roofline, and the smoked lens gives a subtle, modern look without sacrificing the required amber signaling.

• Each lamp contains 16 quality 3528 LEDs for stronger output.
• Improved heat dissipation for longer-lasting performance.
• Wider lighting angle for better coverage along the cab roof.
• Smoked PC lens maintains amber output while reducing glare.

Are Nilight smoke-lens markers weatherproof and durable?

Yes — the lights combine a polycarbonate lens with an ABS bottom shell and factory-applied glue at the wiring entry to achieve a fully sealed assembly. This construction reduces the chance of moisture intrusion and corrosion, making them suitable for road, rain, and seasonal use.

• Sealed PC lens bonded to ABS base prevents water entry.
• Glue reinforcement at the wiring exit for extra sealing.
• Robust materials resist vibration and road debris.

What does installation involve for a 2017–2021 Super Duty?

If your Super Duty already has factory roof marker wiring, these Nilight lights are plug-and-play and swap in as direct replacements. For trucks without prewired markers you’ll need to drill mounting holes and hardwire: cut the connector, attach red to positive and black to ground, then secure each light with the supplied screws and washers.

• Direct replacement for trucks with OEM cab marker wiring.
• Includes 5 smoked-lens markers, screws, and flat washers.
• Hardwire option: red to positive, black to negative; drill if needed.

Will these lights fit my Ford model and meet clearance requirements?

Designed to be compatible with Ford F250, F350, F450, and F550 Super Duty trucks from 2017 to 2021, these markers are sized and positioned to meet typical clearance lighting standards when installed correctly. Confirm fit by matching your truck’s existing marker footprint or measuring mounting locations before drilling.

• Compatible with 2017–2021 Ford Super Duty models: F250–F550.
• Five-piece set covers full roof marker array for standard cabs.
• Verify existing mounting pattern or measure before cutting holes.

Who is this for: These Nilight smoked-lens cab marker lights suit Ford Super Duty owners who want a cleaner, modern roof appearance with improved LED brightness and a sealed design for long-term reliability. They’re ideal for drivers replacing worn or dim factory markers, customizing the truck’s look with subtle smoke lenses, or upgrading to more efficient LEDs. Installers comfortable with simple wiring or direct swap replacements will find the set straightforward to fit, while those without factory wiring should be prepared to drill and hardwire during installation.