Guys currently Im using 90/100W na super white bulb... lately napansin ko my rpm dips from 900 to around 700 if I turn-on the head light... check ko alternator ok naman the engine still runs with out the neg. and pos. terminal of the battery.... Ano kaya problem nito, should I need to install relay... diko pala alam kung ilang amp ang alternator if stock pa ba to..