OK, considering purchasing a 2007 Base and I've read the threads about just going to eBay or car-part.com and buying the Navi DVD player to add the navigation feature. Where I'm confused is that I'm seeing multiple part numbers as being applicable. Each year of the car seems to have a different P/N at the different online parts websites like Acura Parts Warehouse and then you look on eBay. The units there are all physically labeled either P/N 39540-SJA-A310 M1 or 39540-SJA-A640 M1 Which is correct? Can some of you that have done this conversion comment?

Thanks for your help.

 

I would go with the A31. Link -> 39540-SJA-A31

39540-SJA-A64 is an '09+ model and will not plug into the '05-08 harness. One has 20 pins, and the other has 32.

 

Thank you, sir. A310 it is. Much appreciated.