removing a stock cd player...! HELP

[Kidlex01]

ok i have everything i need to install my stereo and i know how my only problem is, when i went to go install my aftermarket deck i can get the 24 pin clip out but there is a thick BLACK 18 or 16 gauge wire connected to the cd player, my car is a 2001 pontiac grand am se

my questions are

What is the black wire for?
and how do i remove it to install my aftermaket deck?

do i cut it or does it unplug...?

Thanx

[cfaris]

the wire you refer to is the ground wire for your deck. cut it and then splice it to the wiring harness on your aftermarket deck.