Kuryakyn 5478 Headlamp Adapter Harness for Harley-Davidson Road King

The Kuryakyn 5478 Headlamp Adapter Harness provides a practical connection solution for select Harley-Davidson Road King models. Designed for powersports applications, this harness helps simplify headlamp installation and supports a clean, reliable connection between compatible lighting components and the motorcycle’s factory wiring.

Built for straightforward installation, the Kuryakyn Headlamp Adapter Harness is designed to work with the original equipment headlamp wiring on specified Road King motorcycles. Its application-specific design helps reduce the need for wire cutting or extensive electrical modifications, making it a useful accessory for riders upgrading or replacing compatible headlamp assemblies.

Fitment: Fits 2014-2020 Harley-Davidson FLHR Road King models, including 2017-2019 FLHRXS Road King Special models and the 2018 FLHRXS Road King Special. Verify the motorcycle model, year, and headlamp configuration before installation. This product is intended for powersports use and is not CARB approved. California Proposition 65 warning applies.

Product Specifications & Technical Data

• Brand: Kuryakyn
• Part Number: 5478
• Product Type: Headlamp adapter harness
• Application: Powersports motorcycle lighting
• Vehicle Make: Harley-Davidson
• Compatible Family: Road King
• Electrical Function: Headlamp wiring connection
• Installation: Application-specific replacement or upgrade harness

What’s Included

• One Kuryakyn 5478 Headlamp Adapter Harness

Features:

• Application-specific fitment: Designed for select Harley-Davidson Road King motorcycles from 2014 through 2020.
• Headlamp connection support: Helps connect compatible headlamp components to the motorcycle’s factory wiring.
• Simplified installation: Helps reduce wiring modifications compared with universal harness solutions.
• Kuryakyn quality: Purpose-built powersports accessory identified by part number 5478.

Fitments:
2014 Harley Davidson FLHR Road King Base
2014 Harley-Davidson FLHRC Road King Classic Base
2015 Harley Davidson FLHR Road King Base
2015 Harley-Davidson FLHRC Road King Classic Base
2016 Harley Davidson FLHR Road King Base
2016 Harley-Davidson FLHRC Road King Classic Base
2017 Harley Davidson FLHR Road King Base
2017 Harley Davidson FLHRXS Road King Special Base
2017 Harley-Davidson FLHRC Road King Classic Base
2018 Harley Davidson FLHR Road King Base
2018 Harley Davidson FLHRXS Road King Special Base
2018 Harley-Davidson FLHRC Road King Classic Base
2019 Harley Davidson FLHR Road King Base
2019 Harley Davidson FLHRXS Road King Special Base
2019 Harley-Davidson FLHRC Road King Classic Base
2020 Harley Davidson FLHR Road King Base
2020 Harley Davidson FLHRXS Road King Special Base
2021 Harley Davidson FLHR Road King Base
2021 Harley Davidson FLHRXS Road King Special Base
2022 Harley-Davidson FLHR Road King Base
2022 Harley-Davidson FLHRXS Road King Special Base
2023 Harley-Davidson FLHRXS Road King Special Base
2024 Harley-Davidson FLHRXS Road King Special Base
2025 Harley-Davidson FLHRXS Road King Special Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1