2001 prelude fuse help

[tank1984]

i recently bought a 2k1 prelude.
everything was perfect
last night i noticed my dash lights (speedo,rpm,etc) were not working.
goin down the road, a car kept honking its horn and flickering its lights.
so i pulled over only to notice my taillights were out.
i check the 15a fuse under the dash and it was blown.
i replaced it, but as soon as i cut my lights on, it blew again.
im confused.
the only thing i could think of thats causing it is maybe my cd player is causin a shortage.i installed it yesterday.
i could be wrong.
plz help