New 1991 90Q owner with questions

[".andrewnewman" <andnew@bellatlantic.net>]

Hi fellow listers;

The previous owner of my recently purchased 90Q with 64K miles(my first
Audi) apparently disabled the ABS on/off switch (in the on position) as
well as the Diff lock switch (off position). The ABS switch will not
"stay" in the depressed position as if the switch itself was tampered
with to keep the ABS from being shut off. The diff lock switch does the
same thing, and when I removed it, someone had ground one of the wires
to the switch.

I'm hoping the above was done by some caring husband whose wife did not
understand the intracasies of ABS and Quattro. Does anyone know if this
is commonly done? Could the PO be trying to hide a problem with the ABS
or Quattro system?

In any case, I would like to restore everything to its proper working
order. Is there some way to make these switches work again(i.e. lock in
the on or off position), or will I have to buy new switches? Are they
expensive? Any good parts houses I should use?

TIA

Andy Newman

91 90Q
87 911 Carrera Coupe
81 VW Cab