My car cycles the clutch to keep the vents at about 49*F. I just tried this resistor mod. Some observations:

-On the G2 W126 the plug end of the ETS is burried up in the dashboard by the ignition lock. Hard to get to... I just stripped some wire insulation by the sensor itself.
-I was able to lower the low vent temp down to 40*F
-The clutch would pull back in at 46*F

I think I'll leave the resistor mod out on my car... that 6*F swing is too much for my taste. I have to wonder if there is dirt buildup on the other side of the evaporator in front of the temp sensor, "tricking" it into thinking the evaporator is colder than it is. Not pulling the dash right now to confirm that.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.