Works with G4, G5, Mini, Nano iPods with bottom dock connector including iPhone/Touch.  3G iPhone and iPods with 5v USB will not charge.  

CONNECTS TO FACTORY 16 & 24-PIN AT HEADUNIT.
RADIO MUST BE CD CHANGER CAPABLE.
COMPATIBLE WITH 2004 MODELS WITH 6-DISC IN-DASH, THX CERTIFIED NAVIGATION RADIOS.
NOT COMPATIBLE WITH NAVIGATION RADIOS IN FORD EXPEDITION.
ONLY COMPATIBLE WITH THE FOLLOWING RADIO MODEL NUMBERS IN THE 2004-2005 FORD FREESTAR: 3F2T-18C868-AJ AND 3F2T-18C869-AJ.
ONLY COMPATIBLE WITH THE FOLLOWING RADIO MODEL NUMBER IN THE 2004-2005 FORD ESCAPE: 3L8T-18C815-FB.
ONLY COMPATIBLE WITH THE FOLLOWING RADIO MODEL NUMBER IN THE 2004 FORD MUSTANG: 3R3T-18C815-UE.
NOT COMPATIBLE WITH AN EXTERNAL CD CHANGER INSTALLED.
NOT COMPATIBLE WITH "RSE" REAR SEAT ENTERTAINMENT INSTALLED.

Works with the following vehicles:

Ford:

2003-2004 Crown Victoria
2004-2005 Escape
2004-2005 Freestar
2004 Mustang

Lincoln:
2004-2005 Aviator
2004-2005 LS
2003-2004 Town Car

Mercury:
2003-2004 Grand Marquis
2003-2004 Marauder