[72' Stang 351 H/O]

Take some water and baking soda and a old tooth brush, Scrub all the corosion off, whipe the connections down. See if it starts. The alternator would be dead if the voltage meter is a zero, so it might be your battery. I'd take a battery from another car and hook it up to see if the battery you have is dead. If it starts up then your alternator is dead or it's just not charging.