The PIE ACU/HON-ALP has a round 8-Pin DIN connector that plugs into either the factory headunit or the factory data cable in the trunk and radio must have CD changer controls (See specific vehicle application list below).
This interface is compatible with the Alpine CHM-S630 6 Disc CD Changer as well as the Alpine CHA-S634 6 Disc MP3 CD Changer when used in conjunction with the CPKCA130B Adapter.
Vehicle Specific Application List: Acura
1992-1998 All Models - except 3.2TL, and NSX or RL models equipped with navigation system. 8-Pin data cable in trunk.
1999-2001 CL - Must have CD changer controls on headunit. 8-Pin data port at headunit.
1999-2001 Integra - Must have CD changer controls on headunit. 8-Pin data port at headunit.
Honda
1992-1998 All Models - Must have CD changer controls on headunit. 8-Pin data port at headunit.
Isuzu
1995-1998 Isuzu Oasis - Must have CD changer controls on headunit. 8-Pin data port at headunit.