J2XCO AVR Automatic Voltage Regulator for Generator 4.5kw 5kw 5.5kw 6kw 6.5kw Halfmoon Style AVR for 4.5KW - 6.5KW Gasoline and Diesel Generator driven by 173F 177F 182F 188F 190F engine Capacitor size 250V 470uF,5.5 inches / 140mm hole to hole on center Totally 6 wires, 4 wires in one connector and 2 single wires