Decided to at least get the wiring in place for the Garmin GPS20A WASS GPS position source for 2020 ADS-B compliance. I have an extra node on the CAN BUS behind the panel directly above the GTX23 transponder, on a 9 pin DSub connector, so decided to locate the GPS20A here, somehow. I had to remove the GTS20 radio, and the GST23ES transponder to get the 45-pin transponder connector and insert the two ins for the RS232 connection needed for the GPS20A.
Extra Node on Can Bus for GPS20A
GTS23ES Transponder for GPS20A RS232 Xmit and Ground
