electronics/ headunit/sound

ok i hope someone can help me out cuz im stumped
i have a 93 5 speed super coupe with factory premium sound which means that the factory sound system has a factory amp.
i am trying to put a new headunit in my car and i have the power and speaker harness hooked up. there is a another harness that i am supossed to use to bypass the amp. right now i have the headunit hooked up without the bypass amp harness and i get no sound.
do i need to bypass the amp or not. if i do someone please tell me where the amp is. please help i hate riding with no tunes

the amp should be in trunk, under package shelf near deck lid hinges

thanks , i got i hooked up and crankin good

egggselent, yassir, egggselent

i dont know if you got my message or not but i would like to know if you had to bypass the amp to hook up your head unit