4.6ford

the other day i was takin out my radio on my 02 gt and i was usin a small screw driver to get the clip on the back of the cigarete lighter undone and the radio was on then all the sudden it sparked but the radio stayed on. that night i went to turn on my lights and the lights turned on but the gauge lights werent on neither were the lights on the radio. i opend up the fuse box and checked the fuses and there all ok. does anybody have any ideas