Where is the solenoid that controls the air conditioner on 1997 vw jetta?
There is a magnetic (solenoid) clutch inside the air con.
conpressor, there is also a fan control switching unit that turns
on the cooling fans and the air con. clutch according to a bunch of
other sensors that it (fan control switching unit) is conected to.
Attached under the battery box. This is how it is on a Bora with
Climatronic air con, may be the same on a jetta, but simplified on
a non Climatronic system.