i need help soon.. electrical problem
It was over charging. If you were lucky, bulbs are the only things that blew.
Is the new alternator a later model double field unit? If so, one of the field lugs have to be grounded to the block, the other is connected to voltage regulator.
Make up a short length of #14 wire with a female connector, and the other end an eye large enough to be secured to a bolt near by the alternator as shown below: