Briggs & Stratton voltage regulator. The voltage regulator sends the proper amount of voltage from the alternator to the battery to keep the battery charged. If the voltage regulator is defective, the battery may keep draining quickly.
Replacement alternator kit, dual circuit white connector
Alternator kit, yellow connector
Alternator (Tri Circuit or 5/9 Amp Regulated)
Alternator kit with black wire & red connector