Folks,

I have a situation on a 90 (with factory AC)   where the AC fan works on
the first two settings but nothing on the 3rd and 4th. I have already
trbl shot the switch up fwd and it IS good.

So is this a problem with the evaporator fan resistors ?  or someone
suggested that:

"There are two fan resistors, one for each fan motor. Unless they both
burned out at the same time, they are probably not your problem, its
more likely you have a problem with the evaporator fan switch and its
associated wiring."

I'm not sure if this is referring to the wiring back in the lh rear and
if both resistors burned out would the fans run at all?

The compressor is not working (yet) so I can't actually "fire the system
up" properly and I'm not sure if this is the source of only two speeds
either.

Can anyone with knowledge of how the system works steer me in the right
direction?  What am I missing?

Many thanks ....

-john