Kingpin F-Series 40" light on a white background
Kingpin F-Series 40" light on a white background
SUV hatch lit red by a Kingpin F-Series light at a night camp
Camp at night lit by a Kingpin F-Series light in white mode and in red mode
Kingpin F-Series light buttons: on/off and color mode
Kingpin F-Series light with the Search Mount Kit for 360° rotation
Kingpin F-Series light end cap and buttons, close up
Kingpin F-Series light end with its on/off and color buttons
Person with a bike next to a truck at night under the stars, lit by a Kingpin light
Kingpin F-Series 40" light, full length on a white background
Kingpin F-Series light end cap with the Kingpin crown logo
F-Series · Dual-color

F-Series 40" Light

★★★★★ 5.0 · 103 reviews
$97.49MSRP $129.9925% marginFree shipping on orders over $300
How many
  • Bright white + red in one light
  • Built-in buttons, no switch needed
  • Weatherproof (IP54)
  • Sips power: 1.1 amps at full brightness
Add what most people add
1
How to wire it: see the wiring guide →
Free shipping over $300
2-year warranty
Want it all in one click?F-Series 40" Light Kit: light, mounts, dimmer and wire.
$163.99 →
“Very easy to install love how you can rotate it. I also like how bright it gets and not overpowering.”Robert B. · Verified buyer
F-Series 40" Light$97.49
White + red
in one light
Built-in on/off
+ color buttons
Weatherproof
all conditions
2-year
warranty
What you get

What's in the box, and what you'll need

In the box

Ready to mount

  • F-Series 40" light (40" × 1.13" × 0.85")
  • 40" power lead, 20 AWG
  • 3M VHB tape and screws, so you can mount it either way
  • On/off + color buttons built in, so no switch needed
Most people add

Aim it & dim it

  • Search Mounts, sold separately. Turn the light 360°.
  • Rotary Dimmer, weatherproof. Up to 2× 40" per switch.
  • Or get the F-40 Light Kit with it all.
Power & wiring

12V DC

  • Truck battery, camper battery, or a power station's 12V outlet
  • 1.1 amps at full brightness. Run it for hours and still start up and leave.
  • No wiring kit? Add the 12-Volt Power Supply Kit (25 ft, fused).
  • You'll need wire strippers, connectors for 20 AWG wire, and wire routing supplies.
White
Work mode

White

4000K neutral white. See your gear, load up, work late.

Red
Night mode

Red

Easy on your night vision. Camp, hunt, and late nights.

Your pick:Set white or red as the start-up color. Press power and it comes on in that color every time.

Bright, not blinding
The light

Bright, not blinding

Every Kingpin light has a thick, diffused lens. It spreads the light out into one smooth, even glow, and protects the light from hard knocks.

  • No bright hot spots. The whole bar glows evenly.
  • No harsh glare, so it's comfortable to look at, even up close.
  • Soft, even light on your gear, with fewer hard shadows.
5.0
★★★★★
103 reviews for the F-Series 40" Light
★★★★★

“I hunt at night a lot and the red light is bright enough to get everything I need without blowing my night vision.”

Damian P.Verified buyer
★★★★★

“Love the lights. Went with 3 F-series 40” lights, rear hatch light on F-series search mounts, all on dimmer switches. Lights up the shell, & beyond when needed. Very happy.”

Brandon D.Verified buyer
★★★★★

“Good quality, good light, dimmable-worth the money. Easy to install.”

Paul N.Verified buyer
Turn on your tailgate
Tailgate

Turn on your tailgate

Rig gear, cook, or pack up in the dark. Switch to red when it's time to sit back.

Trailers & toy haulers
Towables

Trailers & toy haulers

Mount it where you load and unload.

Work zone
Work

Work zone

Relied on by forest service pros, search and rescue teams, and vehicle outfitters.

Specs

The details

Size40" L × 1.13" W × 0.85" H
On Search Mounts: about 1" longer and 1.375" tall
Power12V DC · 1.1 amps / 13 W at full brightness
Color4000K neutral white + red
ControlsBuilt-in on/off + color buttons · dims with any Kingpin dimmer
Lead40" · 20 AWG
RatingWeatherproof (IP54)
BuildExtruded aluminum body · polycarbonate lens · UV-stable end caps
Mounting3M VHB tape and screws included (use either) · Search Mounts sold separately
Warranty2 years from ship date
Wiring & install

How to wire it

12V+−F-Series 40" · 1.1 ampsF-Series 40" · 1.1 ampsRotary dimmerPower in at the knob end.5ABattery
12V+−F-Series 40" · 1.1 ampsF-Series 40" · 1.1 ampsRotary dimmerPower in at knob end.5ABattery
Red = + positive Black = − ground
  • Every cable has 2 wires. Connect red to red and black to black.
  • Where the lights meet, the 3 reds join and the 3 blacks join.
  • The yellow block is the 5A fuse on the red wire.
2 × 40" lights = 2.2 amps
✓ Under the 3 amp switch limitUp to 2× 40" or 8× 12" per switch
Watch the install video

Watch the install video

F-Series 40" install on a truck tailgate, start to finish.

Watch on YouTube →
Full wiring guideHow many lights go on one switch, which end gets power, and real installs from customers.
Small off-road trailer at night lit by Kingpin F-Series lights
On the road

Set it up once. Use it every trip.

Mount it inside or outside. Tape and screws come in the box.

Full product description

The Kingpin F-Series light is the most versatile truck, trailer, and camper LED light on the market. The bright and efficient dual color electronics are protected by an extra thick industry leading chassis and lens design.

Mount them anywhere you can supply them with 12-volt DC power.

Click Here For F-Series 12" Length

Questions

Good questions, short answers

Up to 2× 40", 4× 28" or 8× 12" lights per switch. Each switch handles 3 amps, so add up the amps: F-40 is 1.1, F-28 is 0.7, F-12 is 0.3.

Yes. Kingpin lights are a universal fit, and they mount inside or outside (weatherproof, IP54). Each one comes with 3M VHB tape and screws. Measure the spot first. F-Series lights are true to length: the 40" light is 40" from end to end. The screw holes sit about ¼" to ⅜" in from each end. On Search Mounts, each bracket is 4" long, and the light is about 1" longer and 1.375" tall.

No. A thick, diffused lens spreads the light evenly, so there are no bright hot spots and no harsh glare. It's easy to work under and easy to be around at camp.

It's very efficient: 1.1 amps at full brightness. Run it for hours off your starting battery and still start up and leave.

Yes. It's weatherproof (IP54): dust-protected and splash-proof from any direction. Don't submerge it.

The light comes with 3M VHB tape and screws, so you can use either one. Search Mounts (360° rotation) are sold separately. Add them above, or get the F-Series 40" Light Kit.

No. Tape and screws come in the box. The 3M VHB tape holds on glass, topper doors and smooth panels if you prep the spot: clean it, scuff it lightly, wipe it with rubbing alcohol, then wipe on 3M Primer 94. Most toppers also have a reinforced ceiling for mounting lights. Carpet-lined caps have plywood under the carpet, so use the screws there.

No. On F-Series lights, color is set on the light. Turn the light on and pick white or red with its buttons. The dimmer then turns it on, off and dims it in that color. To switch colors, press the button on the light.

Any 12V DC source works, like a power station's 12V outlet. Most USB ports are 5V, so they won't run the light. Some higher-power USB ports may work, but we don't recommend it.

2 years from the ship date. Send a photo or video of the install and the issue, and we'll replace it or credit you.

More wiring questions? See the full wiring guide

Pairs with

Finish the setup

Compare lengths12"28"40"
Size (L × W × H)12" × 1.13" × 0.85"28" × 1.13" × 0.85"40" × 1.13" × 0.85"
Best forCabs, doors, small boxesMid beds, shellsFull beds, hatches, trailers
Power0.3 amps0.7 amps1.1 amps
Per switchup to 8up to 4up to 2
Price$74.99$99.99$129.99
Trusted by

Builders and outfitters

Same light, other lengths