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Exterior Components› Lights and Components

Subispeed

F1 Plug and Play 4 Wire Harness

Name: F1 Plug and Play 4 Wire Harness
Brand: Subispeed
SKU: 8174581448879

$20.00

SKU: 8174581448879

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Beginner — under 30 min

Overview

The SubiSpeed F1 Plug and Play 4 Wire Harness is designed to simplify the installation of F1 rear fog lights. This harness connects directly between the tail light and the OEM harness, eliminating the need to splice into your vehicle's factory wiring. It is compatible with various rear fog light applications.

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The SubiSpeed F1 Plug and Play 4 Wire Harness is engineered to streamline the installation process for F1 rear fog lights and other compatible lighting accessories. This harness acts as a direct interface, connecting between the tail light assembly and your vehicle's existing OEM wiring. Key features include the prevention of splicing into the factory harness, offering a cleaner and more straightforward installation. This plug-and-play design ensures a secure connection and preserves the integrity of your vehicle's original wiring. This harness is specifically designed for the 2015-2021 Subaru WRX/STI. Its compatibility extends beyond the SubiSpeed F1 Fog Light to include the JDM OEM Rear Fog Lamp, GCS Rear Multifunction Light, and GCS CS Style Rear Fog / F1 Brake Light.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Subispeed
Part Number	8174581448879
Category	Exterior Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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