Zaitsev

hey, i just bought a 94 maxima and sumthin is wrong with it. Every 2 days or so, it blows the tail light fuse. This is the same fuse that is wired into the dash board light, radio backlight, ashtray light. The strange thing is, when all these things are blown, and nothing works, i can push down on the brake and the whole panel will light up like nothing is wrong, but when i release it, everything goes off. Everything goes on except the tail lights that are always supposed to be on when the headlights are, like the dash. Doe sthis mean the short is in the tail light as opposed to the dashboard or ashtray light? anyone else have this problem? how can i fix this cheaply?