It's been ages since the last time I flew the Kamov, but AFAIR the buses were functional somehow but don't expect anything beyond that - the electrical system as such was not modeled, just a bunch of "If...else" without physical meaning behind, ammeter and voltmeter were no functional, and battery doesn't run out. A-10C is kinda same think, first a/c with a proper modeled elec. system was the Mustang.
Regards!