Trail Tech (7004-RR150) Regulator/Rectifier for DC Electrical System 150 watt full wave regulator/rectifier for DC electrical systems Built in relay activates switched 12V DC output line only when engine is running, with adjustable shut-off delay, wire connection for use with most machines DC stator and battery/capacitor sold separately Trail Tech's Regulator/Rectifier will not work with most factory stators Stator must have a floated ground, modifications to stator may be required