I've recently bought a 1985 300CD that has a brand new compressor. Freon was added and I was told it blew cold air. I had the car shipped from California to New Orleans and lo and behold, it's not blowing cold. Called the mechanic in CA, he remembered the job and suggested that the a/c clutch may not be engaging. He said I should "touch both wires together" on the low pressure switch on the receiver/dryer. I've dug around the forums and have come across the term "jump the 2 terminals."

Question: Are these two the same thing. If so, what exactly does that mean. Novice here, so type slowly