2017-2022 Ford F250/F350/F450 Super Duty C4003 Inline T-Adapter for Exterior Lighting

In stock
Regular price $116.00
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Easily connect exterior LED lighting to your 2017-2022 Ford Super Duty without cutting or splicing the factory wiring. This C4003 Inline T-Adapter plugs into the factory C4003 connector located beneath the rear bumper, providing convenient access to the truck's exterior illumination circuit.

Once connected, your lighting accessory can automatically turn on when the truck is unlocked with the key fob and fade off when the vehicle is started or locked. The circuit can also be activated using the factory cargo lamp button on the headlight switch.

Features & Benefits:

  • Plug-and-play access to the factory exterior illumination circuit
  • No cutting or splicing of factory wiring
  • Lighting activates with factory unlock and cargo lamp functions
  • Uses genuine OEM-style C4003 connectors
  • Includes 2 Deutsch DT outputs and 1 quick-connect output
  • Supports 12V lighting accessories up to 3 amps
  • Assembled in the USA

Important: Your truck must be factory pre-wired for this adapter to provide power.

Plug-and-play C4003 T-Adapter

2017-2022 Ford F250/F350/F450 Super Duty

Did you know?
We've just launched Sick Diesel Garage the official installer of Sick Diesel Gear lights, if you are in Florida Sarasota area drop by. Learn More →

Frequently Asked Questions

Unfortunately, not: truck grilles aren't included with your purchase. However, all Sick Diesel lights can be retrofitted to stock truck models to ensure a more stylish and functional drive.

We offer a 6-month warranty on all Sick Diesel light bars, grill lights, accessories, gear, and products. If you’re not satisfied with your purchase, reach out to us, and we’ll get back to you in one business day or less.

Yes! We sell and distribute our products worldwide. For international purchases, Sick Diesel customers are responsible for any additional costs that may occur.

You most definitely can. Our 12-volt LED dimmer controller allows you to adjust the brightness and intensity of your lights to suit your needs. Before completing your purchase, we advise checking the "What is in the package" section of each product page to see if our LED Dimmer Controller is included with your purchase.

As a small, veteran-run operation, we’re all about supporting local businesses. All of our products are designed and custom-made right here in Sarasota, Florida, USA.

No. Smoked lenses don’t affect the color of our lights. Smoked lenses help reduce the glare emitted from traditional vehicle bulb lights, and no discoloration of lights will occur.

The plug-and-play harness connects between the headlight and the headlight harness on either side of the vehicle.

Fitment depends on the year, make, and model of your vehicle. When selecting a product, ensure you choose the exact year, make, and trim level of your truck.

Most of our lights range from 6500K to 12000K, depending on the specific year, make, and model.

Yes, all of our lights have an IP68 waterproof rating.

Ninety percent of our lights are mounted on a rigid frame and bolted into the grille with no modifications—except for the GMC 1500, where the light is attached using industrial adhesive.

For custom builds, contact nick@sickdieselgear.com.