Good condition.Wiring and connectors are good.No evidence of heat or burn out.Not tested.Shindengen part# SH233.Yamaha part# 12R-81960-A1.Fits Yamaha:FJ600 1984XJ650 MAXIM 1980-83XJ650R SECA 1982XJ700 MAXIM 1985-86XJ750 MAXIM 1982-83XJ750R SECA 1981-83XJ900R SECA 1983XS400 MAXIM 1982-83XS400R SECA 1982-83YX600 RADIAN 1986-881980-88 Yamaha Maxim Seca Radian Voltage Regulator 12R-81960-A1 SH233 Product Code: yx600vr233 Brand: Yamaha Product Condition: Used weight: 266.0g