Climate compressor 3.6 + 4.2 not identical ??

Moin V8ler
in my 91er 3.6er suddenly the climate compressor had no more lust. Incidentally, I had another one from a 93er 4.2. Fine, so far so good --> purely mechanically everything fits except for a trifle! The "new" compressor has a cable more to connect, i.e. ==References====External links== Plugs, two cables!? Now, of course, I don't know where to go with the second cable. I know that there are 2 different compressors (Denso and one more). Is there a way to get it to run or everything nonsense and the right one after driving number has to go back in ?

P.S moments are yes, but when it gets warm again .....