My 2540 Shuttle ran out out of hydralic fluid. Soon as power steering started to fail, engine shut down instantanouesly. All power went out. Put hydraulic fluid back in, and it still has no electrical power when ignition is turned to "ON" or "GLOW PLUG" postition. Checked fuses and battery. I tracked the pressure side of the hydraulic system and there is a control box attached to transmission area where it splits the hydraulic lines split to the power steering pump and to the Besko joystick controller. There is a sensor on that control box with two wires coming out. My guess is that sensor cut off the engine and power.

Thanks for any info as tractor is dead. Also, my first post.