Is there anyone still use RETRO cassette radios in thier OLD(nostalia 1980s-early 90's)CARS/TRUCKS/VANS(Motorhome-Bus)just to keep them look"aunthetic"?Yeah,I know people today has thier cd players,I-POD&MP3(4PLAYER?)head units in NEWER CARS...But theres still some TRADITIONAL people still like those CLASSIC auto-reverseing tape deck radios linked to something like A PYRAMID 705 EQ&300WATT AMP(this model has combined 2-IN-1 features;-p)I need a MA 70-57X WIREING DIAGRAM as well as the PYRAMID'S EQ WIRING CODE to install in my 1977 PONTIAC GRAND PRIX...Can anybody FIND&UPLOAD BOTH WIRING CODES on this subject?I CANT FIND NO OLDER CAR STEREO WIRING 4 FREE ONLINE,people could post or have an FREE OLDER RADIO WIRING INSTALLATION ONLINE SITE JUST FOR COLLECTORS....Thanks