Harley-Davidson Right Handlebar Start/Kill Switch Control Assembly
Updated June 26, 2026
This is a multi-function switch pod mounted on the right handlebar of Harley-Davidson motorcycles. It integrates the engine start/kill switch, turn signal controls, and often the throttle control cable and grip. Designed as an OEM replacement, it restores factory operation for models across the Touring, Softail, and Dyna families from the late 1990s through early 2010s.
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Function and Design
The right handlebar switch assembly consolidates several critical rider controls into one housing. The start/kill switch is a rocker-type: pressing the top engages the starter, while pressing the bottom kills the engine. The turn signal switch is typically a three-position toggle (left, off, right) with an auto-cancel feature on later models. On many versions, the throttle control cable and grip are integrated into the same housing, making this a single unit that controls engine start/stop, directional signals, and throttle input.
Vehicle Fitment
This switch assembly is compatible with a wide range of Harley-Davidson models. Touring models include Road King (FLHR/FLHRI), Electra Glide (FLHTCUI, FLHTCU), Street Glide (FLHX/FLHXI), and Electra Glide Ultra. Softail models include Heritage Classic (FLSTCI), Fat Boy (FLSTFI), and Heritage Softail. Dyna models include Wide Glide (FXDWG) and Fat Bob (FXDF). Years span from approximately 1998 to 2013, with the common OEM part number 71684-06A appearing on many listings. Engines range from the EVO 1340cc to Twin Cam 88, 96, and 103.
Common Failure Symptoms
Over time, the internal contacts can wear or corrode, leading to intermittent or non-functional start/kill operation. The turn signal switch may become sticky or fail to cancel. If the throttle control is integrated, a sticking throttle or rough idle can occur. Physical damage from drops or handlebar modifications can crack the housing or break the mounting tabs. Water intrusion is also a common issue, especially on bikes ridden in rain, causing erratic electrical behavior.
Replacement and Installation Notes
Replacement involves removing the right handlebar grip and any throttle cables, then unbolting the switch housing from the handlebar. Disconnect the wiring harness at the connector inside the headlight nacelle or under the tank. Inspect the wiring for fraying or corrosion before installing the replacement. Ensure the new switch is oriented correctly and that all functions (start, kill, turn signals, throttle) are tested before reassembling the grip and cable. Some listings may include the throttle control cable and grip; verify compatibility with your specific model.
