[georgetownjohn]

Hello Forum members.  I would have posted this in earlier 37-640 posts that I made, but they have been closed so I am starting this new one on a wiring question I have run into.  Need a little more help with 37-640.  As I reassemble and reconnect chassis wires, I can not locate wire number 8 yellow on the Ron Ramirez drawing.  The drawing shows it connects to pin 5 of the 6K7 IF amp tube but I can not determine where it connects from there.  Tube data that I see shows that pin 5 is Grid 3.  I do currently have a thin black insulated wire on pin 5 but it goes inside the bottom of the IF transformer.  Is it possible that my run did not have another wire on pin number 5?
I did look at the 37-620 chassis that I have and there is only that one thin black insulated wire on pin 5 of the 6K7 IF tube as well.
 Can anyone help.  Thanks so much