THIS KIT DOES NOT CONTAIN THE PARTS THAT NORMALLY COME WITH THE AFTERMARKET ENGINES SUCH AS CDI UNIT AND CDI TYPE IGN. COIL. IF YOU NEED THEM SEE BELOW ON THIS PAGE. THIS KIT IS ALL YOU SHOULD NEED TO MAKE YOUR NEW 12V ENGINE CONVERT BACK TO 6V IT DOES HOWERVER COME WITH A 6_VOLT REGULATOR RECTIFIER AS 95% OF THE AFTERMARKET ENGINES COME WITH A 12 VOLT...AND A CDI TYPE IGN. SWITCH (OEM HONDA) AS WELL AS ALL THE NEEDED SUB WIRE HARNESS'S SUB-KIT-90-L$89.99 DO WHAT THIS PICTURE TELLS TO DO THEN FOLLOW THE OTHER INSTRUCTIONS BELOW CLICK ON PICTURE TO SEE WHAT NEEDS TO BE DONE BELOW ARE PICTURES OF THE INDIVIDUAL COMPONETS WIRED UP CLICK ON THE PIC'S FOR COLORS OF WIRES AND JUST BETTER UNDERSTANDING. NEW ENGINE CONNECTORS ON K5 THRU 1979 MODELS YOU WILL HAVE TO INSTALL THE SHORT ADAPTOR THEN FOLLOW THESE INSTRUCTIONS IN THE PICTURE ABOVE NEW 6 VOLT REGULATOR RECTIFIER WIRING ON K5 THRU 1979 MODELS YOU WILL JUST PLUG IN THE SHORT ADAPTOR TO THE ORGINAL HARNESS THEN TO THE 6_VOLT REG/RECTIFIER NEW CDI KEY SWITCH HOOKUP'S NEW CDI UNIT AND CDI IGN. COIL HOOKUPS