Got a dynatek CDI for an 02 grizz 660 ... got it in fired it up and it ran great for about 15 minutes when I went to fire it back up it wouldnt run the dash was blank with the diff loc light blinking. Pulled the rip cord and it ran for a second and stalled turn the key back on and heard a pop blew the ignition / dash 10 amp fuse replaced it turned the key on and POP blew it again . Put the stock CDI back in with a new fuse and runs great! Do I have a defective dynatek? Im going to call but have to wait til noon (4hour diff in time from here to Cali.)