i was installing my old radio in my new car and i say these extra cables. I owned a 1995 esi and now i have a 1999 GS. I know the regular antenna hook up and wire harness on the left but the extra 2 on the right i don't know. on look like another antenna hookup and a serial cable. My question is what are the for? (yes, i connected them to my radio there is no difference or change and they disappear into the dash i tried tracing them back.)