Thank you all for the responses.
So do i have this down???
Fire Points only matter for the psychic shooting attacks, otherwise nothing else needs LOS, simply measure from the hull of the tank to affect a unit.
Destructor, Eldritch Storm and Mind war are psychic shooting attacks and need LOS.
Fortune, Guide and Doom can don't need LOS.
So units inside a tank that is stunned can disembark and use Non shooting pshyic attacks
But if he remains inside he can still use non shooting attacks, but can never use the ones that require LOS as it has no fire points.
No that 's not right at all.
Check the rules on Page 67
If the power requires a target you must have LOS. The only powers that can use Fire Points are Witchfires, any other Psychic Power that targets a unit cannot use fire points.
Doom would not be able to be done from a vehicle as it "targets a non-vehicle unit within 24""