radio install

i'm having a problem installing a radio in to my car ... i bought the car and it had a aftermarket radio in it .... it worked for a little while then everything cut out on it. no sound not even turning on. so i replaced the cd player with a newer one and still nothing i then took it to a guy i knew at a install bay and he couldn't fiqure it out ... so i thought maybe speakers ... cuz i finaly got the deck to turn on and work jus no sound. so all brand new panisonic speakers are now in the car and still nothing .... i was hoping that some one may have some advise or would be able to get me a wiring diagram that i can look at ... of and some one told me that there might be a factory amp in the car and that might be the problem. anyway if i could get some help that would be great ... by the way it's a '96
thanks

get out the dmm yo.


My driver side rear wire had a short in it in the middle length...reran all wire to doors and still had issue.


If you have good voltage in both ACC, ground and constant...you should be good to go.


$5 dmm will tell you whats up