Saab sent me a strange wire harness

[Mike Brennan]

I am going to put a hitch on my 2008 95 Combi. I ordered a wire harness to hook up to the trailer. I was told it was a plug and play, but this one has a 6 prong butt female, which I assume will convert to a 4 prong to the trailer, but the other end has a bunch of dead end wires and a bunch of female plugs that I am supposed to splice in.
What the hell have I gotten myself into?
I also don't see a module and I am already out 140.00..