Hello again. I have 2 questions, about 2 systems:
1.- Vacuum system:
I developed an Attitude Indicator for a two-engine piston aircraft (Cessna 337 Skymaster), and it works nice. However, the instrument only works with the suction of the front engine... while the original one works with suction provided from any engine (front or rear engine).
How can i get suction from any engine?
2.- Electrical system:
The aircraft has an electrical system, taking info from the FlightGear wiki and modifying the generic electrical system. It has all its sources, connections and outputs working... but it has a rare behavior: when I switch the batteries or alternators off, the busses still with current & volts. The same thing happens with the avionic bus: when the switch is turned off, the bus and all its outputs still with volts and current.
How can i to "discharge" the electrial busses and outputs, when i switch OFF the sources?