About the W124 (and possibly others) Aux Fan blue temperature sensor modification

I'm not sure what other models used the blue temperature sensor - it is actually part of the Air Conditioner, but this was standard equipment for Australia anyway. The fans are operated in high speed when the coolant temperature reaches around 107c in factory configuration. The fans also have the ability to run at a low speed when the AC refrigerant pressure/temperature off the condenser is above the desired amount. (83c or there about from memory)