Where is the 6-disc wiringing??Help

I just got a 1998 Continental and it has the head unit for the stereo that has the stuff for the 6 disc, put it does not have it. WHat i would like to know is where the wiring is for it. I have the bench front so it is not there as a buckets would have it in the console. I talked to the dealer and he said it sould be in the truck and i looked a little but didn't want to tear my trunk apart. SO, if any of you could help me out, it would be thanked alot.
Grant

If you have the factory installed changer, it was in the trunk, on the left side mounted vertically next to the fender. It's NOT hidden so if you don't see it right away either it was removed, or was never installed.