its going to be one of those days...

With nothing doing on the engine front, I have set too with reinstalling the autopilot...

a lot of wiring later, I switched it on.... nada, nowt.

So, I have spent much of the afternoon troubleshooting my wiring, and checking for continuity... connecting power directly to the head unit resulted in it powering up nicely, so I suspect the course computer has expired.... as I haven't yet been able to get the instrument head powered up from the computer, I can't actually test the drive itself.

So, that's another thing to add to the list of expensive things to be sorted.... sigh.