In Reply to: Question about thermo switch on thermostat '88 M3 posted by Mark on July 08, 2000 at 20:52:06:
I`ll eventually get round to taking it back to the dealers to get it fixed again at some point so it works automatically.
Anyway, there should be 3 wires going into the switch I believe and the whole switch itself plugged into the radiator.
I`m not expert, but thats what I picked up when I watched a technician replace the switch i mine.
: Three years ago I bought an '88 M3. The thermo switch on the thermostat is in place, however whatever plugs into it is missing. What is the part called that plugs into the thermo switch and where does it go from there. My aux fan comes on when the A/C is on but not when the engine gets hot which is a problem now that the temperatures in FL are now reaching 100 degrees F.