Also, FWIW, rather than putting Lee's transponder control gauge over the disabled autopilot bitmap in the pedestal, I left the pedestal as-is and put the transponder gauge on the overhead panel above the HF radio head. Works in both 2D and VC, and the original transponder control head can still be used to change squawk codes.
In Window 04 section add:
gauge02=ILH_TCAS!Transponder,294,133,174,75, pic:no
and in VCockpit05 section add:
gauge01=ILH_TCAS!Transponder,128,113,127,60, pic:no
Regards
Bob Scott
ATP IMEL Gulfstream II-III-IV-V L-300
Santiago de Chile