i was installing subs in my car
everything was goin fine
untill i try to ground the black wire, which runs from
amp to ground location
the other end of the ground wire which connects
to the amp was un-hooked and once the grounding
was complete i hooked the wire into the amp

as i was hooking the ground wire into the amp
there were big sparks at the ground location
it surely didnt look normal to me, as i have never seen
such big sparks while connecting ground wire to the amp
then i checked and both the amp fuses were blown

am i doing something wrong here?
wat could be the reason behind blown fusues and big sparks?
plz help!

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