CYCLE ELECTRIC INC Low Voltage Rectifying Regulator — 12V, 18 A/22 A, black – 81-86 Big Twin, 81-88 Touring, 85-88 Softail, 82-88 FXR, 84 Police
Controls charging voltage on Harley-Davidson and Buell alternators to reduce stator current, lower temperature, and improve motor efficiency while preventing battery overcharge.