TwinPower 75-81 FL FX XL Starter or Horn Handlebar Switch, Model 490578, Replaces H-D 71484-72A

Twin Power™ handlebar starter and horn switches restore authentic controls for vintage Harley-Davidson FL, FX, XL, and custom models from 1936-1981.

• Direct OEM replacements restore reliable starter button and horn activation on vintage Harley controls
• Weatherproof contacts ensure consistent operation under vibration and road conditions
• Chrome or black finishes match Shovelhead and Panhead handlebar aesthetics perfectly

The TwinPower model 490578 starter or horn handlebar switch is designed for vintage Harley-Davidson FL, FX, XL, and custom models from 1936-1981. It serves as a direct OEM replacement for restoring starter-button and horn activation on compatible vintage Harley-Davidson handlebar controls.

This switch features weatherproof contacts intended to support consistent operation under vibration and road conditions. Its chrome or black finish is designed to complement Shovelhead and Panhead handlebar aesthetics. The manufacturer part number is 490578, and the vendor part number is 71484-72A.

Fitment includes the 1973-1977 Harley-Davidson FX Super Glide, 1975-1977 FXE Super Glide, 1975-1976 XLCH, and 1977 FXS Low Rider. Verify the motorcycle model and year before ordering to confirm compatibility.

Features:

• Brand and model: TwinPower 490578 starter or horn handlebar switch
• Replacement reference: Replaces H-D 71484-72A
• Application: Designed for vintage Harley-Davidson FL, FX, XL, and custom models from 1936-1981
• Fitment: 1973-1977 FX Super Glide, 1975-1977 FXE Super Glide, 1975-1976 XLCH, and 1977 FXS Low Rider
• Function: Restores starter-button and horn activation on compatible handlebar controls
• Construction: Weatherproof contacts support operation under vibration and road conditions
• Finish: Available in chrome or black to complement vintage Harley-Davidson handlebar aesthetics

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1
Fitment:
1972 Harley Davidson FLH Electra Glide Base
1973 Harley Davidson FLH Electra Glide Base
1973 Harley Davidson FX Super Glide Base
1973 Harley Davidson XLCH Base
1974 Harley Davidson FLH Electra Glide Base
1974 Harley Davidson FX Super Glide Base
1974 Harley Davidson FXE Super Glide Base
1974 Harley Davidson XLCH Base
1975 Harley Davidson FLH Electra Glide Base
1975 Harley Davidson FX Super Glide Base
1975 Harley Davidson FXE Super Glide Base
1975 Harley Davidson XLCH Base
1976 Harley Davidson FLH Electra Glide Base
1976 Harley Davidson FX Super Glide Base
1976 Harley Davidson FXE Super Glide Base
1976 Harley Davidson XLCH Base
1977 Harley Davidson FLH Electra Glide Base
1977 Harley Davidson FX Super Glide Base
1977 Harley Davidson FXE Super Glide Base
1977 Harley Davidson FXS Low Rider Base
1977 Harley Davidson XLCH Base
1977 Harley Davidson XLCR Cafe Racer Base
1977 Harley Davidson XLT Base
1978 Harley Davidson FLH Electra Glide Base
1978 Harley Davidson FX Super Glide Base
1978 Harley Davidson FXE Super Glide Base
1978 Harley Davidson FXS Low Rider Base
1978 Harley Davidson XLCH Base
1978 Harley Davidson XLCR Cafe Racer Base
1978 Harley Davidson XLS Roadster Base
1978 Harley Davidson XLT Base
1979 Harley Davidson FLH Electra Glide Base
1979 Harley Davidson FXE Super Glide Base
1979 Harley Davidson FXEF Fat Bob Base
1979 Harley Davidson FXS Low Rider Base
1979 Harley Davidson XLCH Base
1979 Harley Davidson XLS Roadster Base
1980 Harley Davidson FLH Electra Glide Base
1980 Harley Davidson FLHS Electra Glide Sport Base
1980 Harley Davidson FLT Tour Glide Base
1980 Harley Davidson FXB Sturgis Base
1980 Harley Davidson FXE Super Glide Base
1980 Harley Davidson FXEF Fat Bob Base
1980 Harley Davidson FXS Low Rider Base
1980 Harley Davidson FXWG Wide Glide Base
1980 Harley Davidson XLS Roadster Base
1981 Harley Davidson FLHS Electra Glide Sport Base
1981 Harley Davidson FLT Tour Glide Base
1981 Harley Davidson FXB Sturgis Base
1981 Harley Davidson FXE Super Glide Base
1981 Harley Davidson FXEF Fat Bob Base
1981 Harley Davidson FXS Low Rider Base
1981 Harley Davidson FXWG Wide Glide Base
1981 Harley Davidson XLS Roadster Base