Nothing electrical works in my car PLEASE HELP!?

after installing a sound system in my car it worked fine for around 5 hours but then i noticed my dash board lights dimmed so i stopped because i knew my taillights were dimmed also i dont know what i did but they lit up again it smelled like smoke in my car but didnt really smell alot after i drove a little farther they did it again when i got out one of my headlights were flickering then it turned off it was smoking more now from behind the dash i drove it a little more to leave it at a gas station then it was smoking even more i disconnected my radio and i took the fuse off the sound system and left it there over night the next day when i turned it on i left it running for awhile to see if any smoke came out when it didnt i drove it but i noticed nothing electrical in my car worked headlights, tailights, brakelights, dash lights, clock, power windows nothing but it still turned on and ran perfectly. it is a 1995 honda accord can someone please help!!!!