will1380

A few weeks ago my 1995 firebird wouldn't start so after a while i found out some security wires under my dash got ripped so a little rewiring fixed that all up. Last night i was driving home and made a Uturn to get to my street and my dash light went out. The service engine lights and everything still lights up but the actual dash lights for the spedometer won't turn on. I just left it for the night and woke up to leave now it won't start...any advice? I'm thinking possibly the alternator has gone bad?