Diode Dynamics C-Light DRL Wiring Harness - 2015-2021 WRX/STI

Convert the Diode Dynamics C-Light Switchback LED Boards into daytime running lights on compatible 2015–2021 Subaru WRX/STI models. This plug-and-play harness redirects the factory high-beam DRL function to the aftermarket C-Lights while retaining normal high-beam operation.

Features

• Enables daytime running light operation for compatible Diode Dynamics C-Light Switchback LED Boards
• Disables the original high-beam daytime running light function without affecting normal high-beam operation
• OEM-style plug-and-play connectors with built-in circuit protection
• Assembled in St. Louis, Missouri, USA
• Three-year limited replacement warranty

Specifications

• Manufacturer part number: DD4055
• Operating voltage: 9–16V
• Wire size: 22 AWG
• Operating temperature: -40°C to 85°C (-40°F to 185°F)
• Connectors: OEM-size plug-and-play
• Manufacturer-listed shipping weight: 0.17 lb

What's Included

• One DRL control harness/module for both sides of the vehicle

Vehicle Fitment

• 2015–2021 Subaru WRX — with compatible Diode Dynamics C-Light Switchback LED Boards
• 2015–2021 Subaru STI — with compatible Diode Dynamics C-Light Switchback LED Boards

Important compatibility notes: This harness works only with Diode Dynamics C-Light Switchback LED Boards; it does not work with factory/OEM C-Lights or other brands' C-Light boards. The vehicle must use its high beams for factory daytime running lights. The manufacturer separately notes that its halo accessories are not compatible with certain 2018+ LED-projector headlight configurations; halo compatibility should not be assumed from this harness's model-year fitment.

Installation

• Estimated installation time: 10–20 minutes
• Tool: Non-marring trim tool
• Modification: None required

Warranty: Three-year limited replacement warranty from Diode Dynamics.