You can log onto Capt Sims support with your email address and order numbe, select the aircraft you purchased and view the knowledge base for that aircraft....This is what I found:Q: Power on light for he Autopilot does not stay on. Using "Z" then "Ctrl-Z" on the keyboard seems to engage and disengage the auto pilot but I can not maintain a level flightA: Please make sure the electric power supply is on according to the Manual.From: C-130 X-perience (FSX) / Systems Programming (gauges) (QID 694)If you use the simicon panel click on the top middle"OH" and that wiwil take you to the upper overhead panel,bottom right is the electrical control panel.....Hope this helps!Rick