Here are some JCNA links that might help and one for conversion for the 68's that might have some photos similar to 65's.
http://www.jcna.com/forums/view.php?Vfnum=130&Vthread=9186&Vref=JCNA
http://www.jcna.com/clubs/conview.php?num=593&club=se21&Vref=se21
http://bob_skelly.home.comcast.net/~bob_skelly/hornswitch/hornswitch.html
David Barnes
68 E-type FHC