If there is anyone interested in working on an autopilot in the Seattle area, drop me a line. Ten years experience as an aerospace engineer and ten years experience as a pilot.
"Tom, I looked at your photos at length. (and thanks for the photos!)
Looks like
IMU D8 to Shield D6
IMU FWD GND to Shield - (That is a minus sign) on Four pin Header parallel to Shield GPS Input. BLACK
IMU FWD 5V to Shield 5V of Four pin Header…"
"Ok, am I missing something. When running the diagnostics, the FTDI cable is left hooked up so we can see the serial window. But the ArduIMU needs access to the AP RX port which is also used by the FTDI cable. Are you folks just splicing into the AP…"