Yes you need the antenna adapter. My 2001 has a non-standard antenna lead and a universal antenna cable would not fit. 2004 may be different, but I doubt it.
WTB-(Alpine KTX-100eq) Imprint tuning kit for the CDA-9887 Email or PM me with what you have and how much $$
My Taurus stereo build thread: http://www.taurusclub.com/forum/117-electronics-security-audio-visual/174530-2001-sel-system-rebuild.html
- Alpine 9887(3way active), a/d/s M860,RF T1500bdcp, 2-Seas tweeters, 2-Silver Flute mids, 2-CDT 690cfx, 2-AmericanBass XFL 1544, Big 3 with 0/1 welding cable", 2 yellow top optima's,220amp alt., 3-Bulk packs of Stinger Roadkill(90-100lbs total)