Ok, I checked the wiring and it has never been spliced. I however did buy an after market pump and it looked liked the original Mercedes pump that was still installed. Had trouble finding the pump for the wagon so bought what I could find (had never bought that brand of anything before). If the problem is that simple I can switch the wires or just buy a pump from Mercedes. Don't mind spending the money at the dealer if that's what I have to do.

I did break the elbow when I first took everything out, but when I got the nozzles from the wrecker I took the T-connectors and plugged one side with a vacuum plug and a zip tie, works well. However now that I know, I will get the correct part.

Thanks again for the assistance, I was afraid of just switching the hoses if there was an electrical issue that would remain and then jump up later. Strange that the pump would have have a different wiring system than Mercedes, but I have had after market stuff not fit before... Thanks again..