while tracking down an elusive intermittent issue with a
http://www.trutrakflightsystems.com/ DFC-200 autopilot
in May's legacy, I found the gyro power wire chafing
on the tray..
http://rob.com/lancair/Others/May/14/PICT2313.jpg

The fix is to send the head to trutrack and
have them install the newer tiny gyros. My DigiFlight-200
also started out with these old big gyros.

Rob

ps: if one goes flying without the AP installed, remember
the peto line goes to the AP tray so one will only see
about 40kts on the airspeed indicator :-)  oops...