Text Box: MODEL NUMBER PIN # LOCATION AS VIEWED FROM INSIDE TRAY KT-76, KT-78 5 5TH PIN KT-76A, KT-78A, KT-76C 11 TOP ROW 2ND PIN KT-79 11 & 12 TOP ROW 1ST & 2ND PINS (SEE NOTE) ALL NARCO TRANSPONDERS 16 3RD PIN TDR-950, TDR-950L 14 2ND PIN RT-358A, RT-459A, RT-859A 22 BOTTOM ROW 1ST PIN (SEE NOTE) ALL BENDIX TRANSPONDERS 1 1ST PIN GTX-320, GTX320A, GTX-327 15 TOP ROW 2ND PIN  (SEE NOTE) SL-70 1 TOP ROW LAST PIN (SEE NOTE) NOTE: AIRCRAFT WITH 14VDC ELECTRICAL SYSTEMS WILL READ 14VDC AT PIN. AIRCRAFT WITH 28VDC SYSTEMS WILL ALSO READ 14VDC AT PIN UNLESS IT IS A GARMIN, APOLLO (UPSAT) OR ARC.  THESE WILL READ 28VDC.