The ELT was a challenge, First off the connector that you wire up is a mini din connector that gets soldered, all four soldered connections could fit inside Lincolns head on a penny! So need to be careful not to get any touching. this ELT transpits on 121.5 and 406 mhz and is capable of broadcasting your last GPS position. Therefore i had to tap into a GPS source off the MFD ( i used RS232 Out #2.) and ran it to the back. Which means I had to open up that beautiful garmin 37 pin d sub connector and get another pin in it, wasnt too bad. I configured the gps output to NMEA out but this output is 4800 baud rate and the stock ELT is 9600 baud rate. So, i followed the instructions and opened up the ELT computer board. you can jumper it down to various baud rates by connecting certain pins on the board. luckily the pins i needed to connect were adjacent to each other so i just dabbed a bit of solder between them, The ELT instructions have you wire up a GPS verification light into the din connector. This is a 2w 5mm led and a 300 ohm resistor connected to the gps signal, then to ground. If the signal is there the LED will blink. I had to fuss with the setings in the G3x and ended up having to change the gps output to normal, vs. fast. This provided a (blink) gps signal to the ELT every two seconds.
I also wired in a button on the panel for autopilot disconnect. touching this button disengages the servos. holding this button down for 3 seconds or more allows you to steer a different course or attitude and when the button is released it will reingage the servos in that heading and attitude.
ELT installed & tested - pitch servo operational
wired in a Autopilot disconnect / control wheel steering button
