A/C Help!!! Sanden 508 wiring

[hydrospec2001]

Hi yall! I recently joined the site and have seen some beautiful trucks on here and eventually hope to get around to posting some pics of my baby as well. Also I hope to gain some knowledge as well as try to help as much as possible. Anyway, I've seen a few threads on here with people that have changed their A/C compressor from the pancake style to a Sanden 508. The question I have is the wiring. The 508 is a one wire compressor and the pancake style had two wires. There is a light green wire and a dark green wire. Both wires come from the cycling/pressure switch and I know the light green wire is hot from the climate control switch in the cab. Where and how do I wire the compressor. I was assuming the dark green wire would be the wire to the compressor but when I run a test light to the dark green wire off the cycling switch I have no power. It is a new cycling switch. If I run the light green wire to the compressor it will engage the compressor but how will it cycle on and off. I'm afraid of burning it up. Could somebody please tell me how to wire this thing up!!! I live in AZ and cold air is a necessity. Any help sure would be appreciated. Thanks so much!