I'm probably being a muppet here but I have read through loads of posts on here and Navplus.us and I'm still not 100% sure on the diversity thingy. Am I right in thinking that I remove the yellow outer casing from the plug already attached to the Concert II in the car. Then I put that innr plug into the 2nd socket on the new antenna adapter..?? All seems straight forward enough but cant help thinking I'm getting mixed up or missing something. And apologies in advance if I'm just being really stupid.