YUP , GOT ONE FOR A COTA 309 + 310 , BOTH SAME . YOU SHOULD HAVE - GREY , BLACK , BLUE , BLUE (2X BLUES) GOING INTO CDI UNIT FROM STATOR . GREEN FROM CDI INTO HT COIL WITH PLUG LEAD (MAKE SURE COIL BRKT IS BOLTED TO NICE CLEAN METAL ON FRAME). WHITE FROM CDI IS NOT NEEDED JUST TO RUN BIKE (POSS JUST FOR HORN)SO TAPE UP . YELLOW GOES TO RECTIFIER ONLY NEEDED FOR LIGHTS SO TAPE UP . GREEN/YELLOW IS GROUND , BOLT TO NICE CLEAN METAL ON FRAME