Power antenna and after market CD players don't mix?

Hi, I just installed a CD player in a 95 century. I was wondering how do I get the power antenna to come up? The deck is a kenwood and it does have a dark blue, violetish wire that says ant. cont. I hooked that one to a wire that looked like it on the wiring harness but still the antenna won't come up when I turn the deck on. Any suggestions?