Hi all, I just picked up a nice condition AM radio for my 68' console. I have a few questions, the first being that it came with a fader harness for the front/rear speakers. I searched the internet and it seems this is for a Cougar application? I am curious if it was also available for the Mustang? Secondly, there is a small toggle switch on the side of this radio as well as an additional red wire. I wanted to see if that is factory or something added? I guess this was likely out of a Cougar? This radio is in great shape so I can only imagine it was an early take off? Also, what are the measureable differences between standard and console radio knobs? I am thinking these are likely standard knobs, and were there any differences between the Cougar and Mustang radio knobs themselves?? Thanks!