Ac compressor wiring

[hotrodharley]

Have a 84 c30 crew cab that came with a 454bbc with ac;;it had a cummums installed back in 86 and never had ac put back on it..i'm putting ac back on it but don't remember what plug looked like that pluged into stock ac compressor..when the cummums was installed they just took all wiring that wasn't being used and all taped up inside wire loom;;found ones for ac pressure switch//fan/fan resistor and so but found extra plug that thinking went to compressur but like to see a pic of one to see if the plug found is correct one