thanks for the info,
so where does the power to the evap temp sensor come from? I am not getting any power to that switch. so starting at the end this is what I am picturing. power to the compressor comes directly from fuse 8. control of the compressor comes from the pressure control switch on the receiver which in turn comes from the ETR (evaporator temp) switch under the dash but where does it come from before that??
thanks
Scott

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Thanks! Scott
sdpettitt@yahoo.com