I have been reading a few posts today about modifying the evap temp switch to keep the compressor from cutting off to early and it got me thinking. I pulled out the switch and left it hanging and went for a cruise and I was able to achieve 38 degrees at the center vents wheras before i could get at best maybe 46 degrees on a long highway run. If I solder in a resistor, to keep the compressor from cutting out at around 45-50 degrees, would it be safe to let it go down to say 40 degrees inside the evaporator box or could I let it get colder in there? Also, does this kind of mod really work on a 95 degree sunny humid texas day? So far I have only tried it at night when the ambient was around 83 degrees.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual