开云体育

I am trying to un-modify an FT-101 EE to restore CW operation in a radio that has an AM filter and the mode switch modification installed. Everything seems to be OK from the pictures and directions in the service manual as far as restoring CW operation. I can do everything as far as reconnecting wires and diode except the yellow wire that goes to the heater switch from pin 4 in the AM modification. Does any one have a clue where that wire came from originally and what I should do with it? Does it just hang in the air or did it actually have a connection on the other end from the heater switch?
Don, AK2S