also a cr*p battery will make them blow as its part of the charging circuit and needed to make the regulator rectifier work also check the lights are secure and solid as a loose lamp will cause the filament in the bulb to break with vibration as the filament does get very hot and the metal its made of gets very soft when its glowing as all metals do,it could be the reg/rec as the other bloke said though too who knows change the bits to see if all else is good ok adam
adam, December 2005
