Rick's Motorsport Electrical TMR1003U Rectifier Regulator

Rick's Motorsport Electric TMR1003U (10-503) Universal Rectifier/Regulator is an OEM-style replacement that consolidates a rectifier diode bridge and voltage regulator into a single module for motorcycles with 3-phase field-excited alternators. Marketed as a universal fit, this unit is listed for select Yamaha, Kawasaki, and BMW models, enabling a single plug-in solution to convert AC from the stator into DC and regulate charging voltage for the battery. The part is identified in Rick's lineup as TMR1003U (10-503). As a universal rectifier/regulator, it functions as an aftermarket replacement to restore charging performance on bikes that use a 3-phase field-excited alternator, providing the necessary rectification and regulation without requiring a model-specific OEM part. Typical applications include replacing worn or failed rectifier/regulators on motorcycles that rely on 3-phase field-excited systems, where a universal unit offers broad compatibility across brands while maintaining the expected charging behavior.