trutrak works great with garmin 296. Hooked up the 720 with usb to serial cable and db9 pinout - pin 3 to provide data out. pin 5 to common ground. Made sure baud rate was matched. trutrak not receiving data. Any way to make sure the data out is working (new cable)? Any advice for troubleshooting?
Anyone with 720 running trutrak? If so to what did you attach the ground wire from pin 5?
Thanks in advance
Rich