• Earn FAST Points on every order!
  • Photo - Primary
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package

DV8 Offroad 40 AMP DTP 4-Pin Halo Light Harness

  • Backed by real installs and tuning experience at FAST of West Chester
82 in stock

Everyday Low Price:

$53.99
$53.99
Shipping calculated at checkout.

Get it fast — Order now.

I18n Error: Missing interpolation value "end_date" for "Ends on {{ end_date }}"
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Earn FAST WC Points on this order — redeem on your next purchase

This 40 AMP DTP 4-Pin Halo Light Harness is designed to power a single DV8 halo-equipped light with a clean, reliable wiring solution. Built with durable 14-gauge wire, it features a 40-amp fuse and 40-amp relay to ensure consistent performance and protection. The dual round switches allow independent control of the main light and the accent halo. The halo switch cycles through OFF, WHITE, and AMBER, giving you flexible lighting options from the cab. Both switches are housed in easy-to-install round mounts for a clean interior setup.

Installation Instructions
  • Plug & Play with the DV8 20-Inch Halo Elite Dual Row Light Bar w/ Accent Light.
  • Designed to work with DV8 lights equipped with accent halo/ accent lights
  • 1-foot power and ground leads with an in-line fuse and ring terminals
  • 10-foot wire lead with 4-pin male Deutsch plus connector plug
  • 10-foot wire lead with a round housing switch
  • Utilizes a 40-amp fuse with a 40-amp relay
  • Dual switch to power the light and halo
  • Switch halo from OFF/WHITE/AMBER
  • Designed to power one light only
  • Easy to install round switches
  • 14-gauge wire build
  • Earn FAST points on this part!
  • Backed by real-world installs
  • FAST WC Team Approved
DV8 Offroad 40 AMP DTP 4-Pin Halo Light Harness

$53.99

Why Drivers Choose FAST of West Chester

  • I can't recommend this place enough. Being able to trust a shop in the performance world is big. The 2hr drive to get there, is worth knowing the job will be done right. Very happy to have found this shop, to
    support my builds going forward.

    Donald Wojnar

  • I recently had the pleasure of working with FAST of West Chester for some performance upgrades on my 2022 WRX, and the experience was nothing short of exceptional. I opted for a Borla S-Type exhaust and Cygnus Coilovers, and the team at FAST nailed the installation, fitment, and setup to a T.

    Adam Cranston

  • The team at FAST are excellence in every way. First, I consulted with Dave on mods for my HPDE track car. He listened and advised me on the best parts & mods to achieve my goals. He was patient & gave me space to research the options presented & worked with me through several changes before we built. Second, the build execution was flawless, proper heat shielding, bracing and poly everywhere. All components worked as advertised.

    Bryce Budd

  • This place has been my go to shop for all things Subaru. From simple service to performance parts and tuning, they have been top notch.

    William Brunell

  • Excellent shop. They installed a Cobb Stage 2 DP and Whiteline Sway bars and end links on my 2013 WRX. The work was done right and clean. The estimate was accurate. They were very knowledgeable, friendly and gave me the straight scoop on exactly what I was getting for the money
    and what I needed to get where I want to be with it. I'd recommend them
    to any car enthusiast.

    Devin Greco

Does it come with a warranty?

Most products we carry include a manufacturer warranty. Since we work with top performance brands, warranty coverage can vary by product. If you have questions about a specific item, reach out — we’re happy to help.

Do you offer installation help or advice?

Yes — we don’t just sell parts, we install and tune them too. FAST of West Chester is a real performance shop, and we’ve worked hands-on with many of the products we carry. If you have questions about fitment, installs, or building your setup, our team can point you in the right direction.

How fast is shipping?

Many of our products ship the same day or next business day, depending on availability. We work hard to get parts out fast so you can get your build moving without delays.

What’s your return policy?

Returns for exchange or refund are accepted within 30 days of receiving your order. Items must be in new, unused condition and in original packaging. If you have any questions, our team will help make the process easy.

Unlock 200 FAST Points Today!
Create your free account and get 200 FAST Points instantly.

🎉 Claim My 200 Points Now