LOCKING COLLAR SHORTS
I think the higher density plugs are more likely for the locking collar to come into contact with an adjacent pin.
MIL-DTL-3786: 20 milliohms (Rotary Switches)
MIL-S-6807: 20 milliohms (Snap Pushbuttons)
MIL-S-8805: 40 milliohms (Pushbuttons)
MIL-S-83504: 100 milliohms (DIP Switches)
Target the gear to get WOW
Disconnect the down brace prox (2 on each) to get GEAR NOT DOWN.
Disconnect RA RECV coax cable to get RA 2500 FT.
observe RA 2500 FT on the ADI
Select FID on TXP
Page 23. learn to do the self test