• 15+ Years of Performance Parts, Tuning & Installation
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DV8 Offroad 40 AMP DT 4-Pin Halo Light Harness

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

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$49.99
$49.99
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The harness utilizes a 40-amp fuse paired with a 40-amp relay to help protect your electrical system while ensuring stable power delivery. A 10-foot wire lead with a 4-pin male Deutsch connector provides a secure connection, while the 8-foot lead routes cleanly to the housing switch. One-foot power and ground leads include an in-line fuse and ring terminals for straightforward battery hookup. It offers true plug-and-play compatibility with the DV8 7-Inch Halo Elite Round Light with Accent Halo and the DV8 20-Inch Halo Elite Single Row Light Bar with Accent Light.

Installation Instructions
  • Plug & Play with the DV8 20-Inch Halo Elite Single Row Light Bar with 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
  • Plug & Play with the DV8 7-Inch Halo Elite Round Light w/ Accent Halo
  • 10-foot wire lead with 4-pin male Deutsch connector plug
  • 8-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 DT 4-Pin Halo Light Harness

$49.99

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.

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