trying to replace the battery and acc lights inside my car were on(like dash radio and all) and the moment i touched the cables to the terminals..there were SPARKS and one of the terminals LITERALLY MELTED...
now the car is not getting any power to anything after i got another battery put on..

all fuses in the fuse box look good..
what could it be? what did i short out...
thinking it could be the main relay.

any suggestions
car is 1992 honda prelude si.
thanks