high pitch

[William M. Lockwood-III]

My step-dad just bought two 5k's in VT.  One of them has an electrical(?)
high pitched noise coming from the dash area, (programmer?).  When the car
is turned off the noise fades. 

The other car has a squeal that is very loud coming from the middle of the
car I think.  My thought was some drivehsaft bearing.  It is very lound to
thirty and then goes away.  It has nothing to do with clutch engagement
and nothing to do with throttle position.

Any advice on these would be helpful, 
Thanks
Bill