Re: HVAC Servo's Not Working
You need to check for voltage to the servos, otherwise the "wiggle test" is as scientific as you can get. Harbor Freight has a multimeter for less than $10.00 that is basic junk, but works for this type of diagnosis.
The alternator lamp shou;ld not be on when the car is running at a reasonable RPM (1500 and up) Possibly a ground issue or a improper wiring job.
Forward me your email and I will send over the SPF factory update bulletins for your car.
The GT 40 reunion at the Glen in 1989 was as close to Heaven as I'll get...