The regulator maintains the charging system output within the specified range to prevent overcharging, and the rectifier converts the ac (alternating current) output of the alternator to de (direct current) to power Ihe lights and other components and to charge the battery. The alternator rotor is mounted on the left-hand end of the crankshaft.
The starter motor is mounted on the top of the crankcase behind the cylinders on the lefthand side. The starting system includes the motor, the battery, the relay and the various wires and switches, and a starter safety interlock system. On XL600V-H and J (1987 and 1988) models without a sidestand switch, ifthe engine kill switch is in the RUN position and the ignition (main) switch is ON, the interlock system prevents the engine from being started if the engine is in gear unless the clutch lever is pulled in. On all other models, if the engine kill switch is in the RUN position and the ignition (mam) switch is ON, the system prevents the engine from being started if the sidestand is down and the engine is in gear - the engine can be started with the sidestand up when it is in gear as long as the clutch lever is pulled in.
Note: Keep in mind that electrical parts, once purchased, often cannot be returned. To avoid unnecessary expense, make very sure the faulty component has been positively identified before buying a replacement part.