I replaced the voltage regulator last week and since then my radio and instrument cluster lights won't turn on. I've checked all the fuses and and only needed to replace the top left blue 15 amp fuse, but still nothing. Any ideas what it might be? Is it possible I fried my stereo somehow when installing the voltage regulator? The stereo is a Pioneer DEH-1500. It's a pretty basic CD player. I checked the back of it to see if there is a fuse - there is not.