It appears my '85 P/S switch to boost idle only works when the A/C is also
on.  I have an '85  1.9l  with only the one idle boost valve on the
firewall.  The Bentley only mentions the P/S switch in the A/C wiring
section.  It looks to me like it picks up 12V when the compressor is on and
the power steering switch closes when the wheel is cranked full one way or
the other.  The book clearly shows two valves for the Digijet (one each for
A/C and one for P/S) but my engine appears to have only ever had one.  (No
paint or rust signs of a switch being removed.)  Do you think VW thought
they could eliminate the extra switch?  The P/S switch only comes into to
play under full lock situations anyway (theoretically).  Is this a pressure
switch or mechanical contact switch?

                                                             Jay '85 Westy