Eddie Cesnalis Posted June 3, 2024 Report Posted June 3, 2024 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
Tom Baker Posted June 3, 2024 Report Posted June 3, 2024 You need a jumper from pin 15 to pin 1 on the plug for the unit. Quote
Eddie Cesnalis Posted June 3, 2024 Author Report Posted June 3, 2024 Thank you Tom. I could not find that. Do you know which doc it's from? Quote
Tom Baker Posted June 3, 2024 Report Posted June 3, 2024 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
Eddie Cesnalis Posted June 3, 2024 Author Report Posted June 3, 2024 looking at pin assignments pin 1 = 'AVIONICS MASTER ON' pin 15 = 'POWER INPUT' Quote
Madhatter Posted June 4, 2024 Report Posted June 4, 2024 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
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