AC clutch problem on a 94 Civic

I got a what looked to be a rebuilt compressor from a salvage, installed it and turned on the ac, looking at it the clutch is not engageing, I knew that my clutch still worked on my ond one so I connected my old one again and it does not come on. I did forget to disconnect the battery so I checked all the fuses and I don?t see any of them blown. The ac light still comes on. Where to go from here I don?t know. I am wondering if I could check the clutch hooking it up to the battery and turning the pully to see if it catches or not.