Need to get hitch on my CX-9 and need some advice and thoughts. I like to do things myself whenever possible but a little scared here. The hitch itself no problem but the wiring harness not sure and here is why. I have installing trailer wiring in the pass with no real issues. But in looking for the proper harness they are asking for which radiator I have? And I have look at my VIN to see if it gives some idea what they are talking about and why? I can find any way to find out which of the 2 listed I have and why it is necessary to know for a trailer? Does anyone have any experience with this situation and should I have a dealer install instead? Thoughts?