GS300Tran

I was trying to fix the cigarrett lighter , when i put the power cable back in , the whole damn system black out , even the clock didn't work , the climate weather control/radio/CDs , nothing work , i dont know what's the problem was . Maybe the fuse box , but my Lexus is gs300 1996 , the only fuse box i see is under the hood , i was thinking there's another one , if you know something, please post and HELP!