Ride height sensor and plug on 2006 LR3 se
 

I replaced the right rear ride height sensor, and the dealership recommended I also replace the plug end. They sold me sensor # LR20161 and plug kit # YQM503220. After installing the new parts I discovered the plug would not connect to the sensor. I struggled with it and eventually cut the plug off and removed the new sensor, and tried it on my work bench. No go. The new sensor looks identical to the old one, but the plug is slightly different in color and the end looks slightly different. But the dealer assures me that both parts are correct. I eventually had to reattach the old plug which fits fine. I wish I had never cut it off. I wonder if anyone has any thoughts of what the problem is.
thanks for the help.