Ah, got it, didn't have pliers with me when I checked. So aquarium line connector to join the two lines does the trick?
2007 550i, Sport Premium, Silver Gray Metallic, Gray Dakota, Navigation, Cold Weather Package, Comfort Access, Heated Rear Seats, HD Radio, Xenon
2007 X3, 3.0si ///M
Sport Premium, Monaco Blue, Gray Dakota, Navigation, Cold Weather Package, Xenon
2002 X5, 3.0i Sport Premium, Titanium Silver, Gray Dakota, Cold Weather Package, Xenon, just a winter vehicle