Audio Systems: Antenna plug-in for 1997 Ford Explorer, auxiliary input adapter, harmon kardon

Question
I bought a Harmon Kardon Drive + Play for iPod and the FM Transmitter Adapter with the intention of using it on a 1997 Ford Explorer with a factory JBL Premium Sound System with 6 disc changer.  I've taken the radio out to access the antenna plug-in and it is not there.  There are 2 modular plugs that come out the back.  One I assume is power in and also goes to the back power amplifier by the subwoofer, the other probably to the CD Changer.  I have followed the antenna lead to the amp in the cover to the right of the back cargo area.  Now after all of that screwing around, it appears the antenna lead is not standard.  It is female instead of male.  Where do I find a male-to-male adapter to fit the antenna in into one end of the Harmon Kardon adapter and a female-to-female adapter to come out the other end?
Thanks,
-Steve Schumsky-

Answer
you can find that adaptor in any car audio store is call ford to motorola  the problem is that the unit you remove at front is not a radio it is only a remote contrl unit the radio is in the back that square amplifier looking box is the radio

now there is two better ways of connecting this device to your vehicle
if you keep the cd changer use this interface to input digital audio in to the factory radio NOT FM
http://www.oemautosound.com/pc-392-86-pie-x3-frdw-triple-input-auxiliary-interfa...

if is ok to lose the cd changer or you don't have one  use this interface
http://www.oemautosound.com/pc-170-86-pie-frdw-aux-ford-auxiliary-input-adapter....

there are also ways to plug the ipod to the radio and the radio will control the ipod but you have the drive and play  so go ahed and use that
good luck  with the installation