Autotemp diagnosis

[Peter Engel <vze2dp8c@xxxxxxxxxxx>]

Does anyone know of a source for very detailed info on the Autotemp
system as used in a 70 Imperial?

I have been plagued with blower problems for years and finally got
disgusted enough to deal with it.

I have a spare of each system component and I'm redrawing the factory SM
schematic to make sense of what is going on.  I've even disassembled the
brain to find out exactly what wire goes where.

I have drawn a schematic of the brain circuit board and it is fairly
simple (4 transistors, 5 resistors, a capacitor, a trimmer pot, and a
SIP resistor (I think).

The problem is that I don't remember/know enough about electronics to
figure out which leg of each transistor does what.  Too many variables.

I'd like to add my research project to the website when it's done but
for now I'm kinda stalled.

Anyone want to help with this aspect?

Pete in PA