This is one of those days where I took two steps forward and three steps back.
Broke a small wire while trying to get to the pins to install the GRT EFIS audio wiring, at pins 31 audio and 32 lo.
I noticed that there is a pin in hole 25 on J1 connector to the audio panel although there is no connection to that hole. Since that confused me I decided to do a diagram of every connection on both connetors of the audio panel.
