Eddie Cesnalis Posted June 3 Report Share Posted June 3 I want my 327 to power on with my avionics master switch like my other units. My prior CTSW was configured this way. I found this setting somewhere 2 years ago and asked my A&P to update it but it didn't get done. I can't findi it now. I asked Gemini and was told there is no setting. Now I'm confused, do any of you have a 327 powering up automaticlly or do you have to hit a button on the transponder like on or alt? Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted June 3 Report Share Posted June 3 You need a jumper from pin 15 to pin 1 on the plug for the unit. Quote Link to comment Share on other sites More sharing options...
Eddie Cesnalis Posted June 3 Author Report Share Posted June 3 Thank you Tom. I could not find that. Do you know which doc it's from? Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted June 3 Report Share Posted June 3 I just did a google search for "how to set garmin gtx327 to come on with power", and found the answer on the Van's forum. Quote Link to comment Share on other sites More sharing options...
Eddie Cesnalis Posted June 3 Author Report Share Posted June 3 looking at pin assignments pin 1 = 'AVIONICS MASTER ON' pin 15 = 'POWER INPUT' Quote Link to comment Share on other sites More sharing options...
Madhatter Posted June 4 Report Share Posted June 4 The CTSW doesn't have a typical avionics master switch setup. The power input needs to be tied into the master switch thru the transponder circuit breaker. Unfortunately the SW has a bizarre electrical buss setup but unless you completely rewire it like I did you will have to live with it. I have installed many avionics packages in lots of aircraft and have never seen anything as bad as FD. Quote Link to comment Share on other sites More sharing options...
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