Tbone
Well Known Member
I?m working on a transponder install (GTX 327). I have connected the power wire to CB, the Avionics wire to a switched power. When I power up the aircraft the transponder is off. Good. When I power the Avionics master up the transponder powers up. Good. Now when I turn off the Avionics master switch off the transponder stays on. Not what I expected. Can someone tell me what is the purpose of the master avi wire going into the transponder is for? My thoughts were that the Avionics master would (should) turn the transponder on AND off. No? It it just a ?sense?wire?