now you might see where IM a bit confused , the schem I have also has the black wire going to the first track , IM still thinking the white audio wire more then likely goes to that track with the the cap and resistor on it ? This mic was a yard sale special ,(5.00) it had no cord on it , I had taken the head apart and the MC-320 cartridge was clean as can be , had a buddy swap heads on his mic (just like yours in the pictures) and the head was fine. I didn't have my digtal that day to take a few shots,you took care of that (-: . From looking at the mic ,I realize the Tug-8s are a bit older and this one still had the relay/electronic switch on it,from looking at it ,it looks as if the bottom half might have been sitting in water for a time ? I found alot of white powder (water deposit) under there. Very lucky the head was good and not a total lose if I can't get the old monster running. The water (if that's what it was) shouldn't have hurt anything , all the parts on the little amp look good to go. I will attempt to try and improvise by your pictures Carl at leasts one more time before I throw in the towel. Your pictures are great !! and the time you took to take the shots and place them on the site was very much appreciated. For what I paid and the head/cartridge still being good as it is , I still feel somewhat a "head" all the same. Bringing older radios and mic's back to life is a real treat for me,IM no expert ,but I get lucky from time to time. (-: thanks again Switch Kit (Your pic's make this a great thread Carl , if somebody else might need to wire one of these beasts, the pictures and schem's should help a great deal)