87 SDL - 2 pressure sensors on AC drier?
The CD manual doesn't have an AC diagram specifically for the 87 SDL. There are diagrams for the 86 SDL and 87 gassers. None of those diagrams show that there are two pressure sensors on the 87 SDL drier. My car was converted to R134a before I got it. There is one sensor with bu/rd wires as in the diagrams and a second sensor with brown wires that tuck into the harness. If it's an add on, it's a very clean and factory looking job. Any idea what this sensor is for?