Antenna adapter for dual diversity?

[Kenneth]

I've put an aftermarket head unit in my 200q20v, but I don't yet have an antenna adapter.  Noting that the factory (was Bose) system has two antennas, I want to confirm that the adapter I need is one such as this:

http://www.discountcarstereo.com/BAADIN2F.html

These are described as dual FAKRA adapters, with FAKRA apparently being the connector company, along the lines of Delphi, Framatome, Molex, etc.  The plug from the antennas is different from the more common antenna plug that the (Clarion circa 2005) head unit I'm using.

Could anyone please confirm that the antenna adapter I linked is the correct one to properly use both antennas in the 200q20v?

Another version with a single plug is here:  http://amzn.com/B004S6QJEI.

Thanks!

Kenneth