V-Twin Left Side Handlebar Control Module, Black — Harley Davidson FLST/FXST (78591B)

Upgrade your Harley's left-hand controls with the V-Twin Left Side Handlebar Control Module in black, engineered for FLST and FXST models from 2012 to 2020. This durable module features a built-in front clutch switch and a 48-inch wire harness for flexible routing, plus a turn-signal wire reserve that keeps your existing wiring setup tidy and compatible.

Key specifications

• IP66-rated construction for dust and water resistance, designed to withstand varied riding conditions.
• Left-side control module in black finish; OEM cross reference 71500292 for precise fit and compatibility.
• 48-inch long wire harness enables flexible installation paths on complex handlebars.
• Can be combined with the right-side control module or assembled with the switch housing to match your configuration.
• Compatible with Harley Davidson FLST, FXD, FXST models from 2012 through 2020 and XL models from 2014 through 2020.
• Made in Taiwan; compatible with chrome right-side (SKU 32-1646) and black right-side (SKU 32-1647) modules.
• Part number: 78591B.

Whether you're upgrading an aging control cluster or building a custom handlebar setup, this module preserves OEM standards while delivering practical functionality for everyday riding.

Handlebar control module for the left side features a black finish.

Upgrade your motorcycle's handlebar controls with the V-Twin Left Side Handlebar Control Module in black, designed specifically for Harley Davidson FLST and FXST models from 2012 to 2020. This durable module features a built-in front clutch switch and includes a 48-inch long wire harness for flexible installation. The integrated turn signal wire reserve ensures seamless compatibility with your existing wiring setup, making installation straightforward and efficient. Crafted from a robust IP66-rated material, this control module offers excellent protection against dust and water ingress, ensuring reliable performance in various riding conditions.

Designed with versatility in mind, this left-side module can be combined with the right-side control module or assembled with the switch housing to suit your preference. Its sleek black finish adds a stylish touch to your motorcycle's handlebar area while maintaining durability and functionality. The module's construction adheres to OEM standards, with an OEM cross-reference of 71500292, ensuring a precise fit and optimal performance. Whether you're customizing your motorcycle or replacing a worn-out component, this handlebar control module provides a high-quality solution that enhances both aesthetics and usability.Manufactured in Taiwan, this module meets rigorous quality standards and is compatible with a range of accessory items, including the chrome right-side handlebar control module (SKU 32-1646) and the black right-side handlebar control module (SKU 32-1647). Easy to install and built to last, the V-Twin Left Side Handlebar Control Module ensures your motorcycle's controls are reliable and accessible, no matter the riding conditions.

Features:

• Includes front clutch switch and turn signal wire reserve for comprehensive control setup

• Constructed with durable IP66-rated material for water and dust resistance

• 48-inch long wire harness offers flexible installation options

• Can be combined with right-side modules or assembled with switch housing to match your preferences

• OEM cross reference: 71500292 for compatibility and quality assurance

Fitment
Harley Davidson FLST 2012
Harley Davidson FLST 2013
Harley Davidson FLST 2014
Harley Davidson FLST 2015
Harley Davidson FLST 2016
Harley Davidson FLST 2017
Harley Davidson FLST 2018
Harley Davidson FLST 2019
Harley Davidson FLST 2020
Harley Davidson FXD 2012
Harley Davidson FXD 2013
Harley Davidson FXD 2014
Harley Davidson FXD 2015
Harley Davidson FXD 2016
Harley Davidson FXD 2017
Harley Davidson FXST 2012
Harley Davidson FXST 2013
Harley Davidson FXST 2014
Harley Davidson FXST 2015
Harley Davidson FXST 2016
Harley Davidson FXST 2017
Harley Davidson FXST 2018
Harley Davidson FXST 2019
Harley Davidson FXST 2020
Harley Davidson XL 2014
Harley Davidson XL 2015
Harley Davidson XL 2016
Harley Davidson XL 2017
Harley Davidson XL 2018
Harley Davidson XL 2019
Harley Davidson XL 2020