w201 m103 ac low pressure switch wiring

[lsmalley]

So I need help finding the problem to the ac turning on. I have narrowed it down to the low pressure wiring. Everything works fine and ac is freezing. When pressure gets to about 250 psi or so, fan turns on and then turns off at about 180 psi. Low side pressure is about 30 psi - 35 psi. The way I get the ac to turn on is running 12v to the compressor clutch. If I jump the 2 high side wires (switch with red cap and brown wires) the fan turns on, fan also turns on if I ground one of the wires to the chassis. The low side pressure switch (2 prong switch in receiver drier) is brand new, but jumping the 2 wires (blue/red & blue/red) does nothing. I tried grounding the wires to chassis and got nothing. Checking the resistance of the wires shows one wire as having .070 when checked against chassis and the other wire does not register.