i had a problem just like this, i was going up a hill, racing my friend... stupid me. and for some reason my radio blew. now when i tried to replace my back up radio fuse which is 7.5 amps, it wont take anothher 7.5 amp!!! anyways my radio burned out, my clock never went past 1 and was very dim, my corner turn sigals did not work, and i had other minor electrical problems. i never found what the problem was... i just replaced the radio/clock 7.5 fuse with a 10 amp fuse and it works now...