Cheers guys, I went ahead and bought a MKIV unit (of a forum member no less). Anyways I was wondering how I can see if TMC is working, i.e. test it. I'm suspecting that my radio (mini harmon kardon) is missing the it's TMC unit but how would I know for sure?

Edit: co-worker of mine suggested I should check if I had my rnd inf enabled, I did not. Let's see if this does the trick, the traffic information option is still greyed out but I'm assuming it needs to actually get a traffic update first. I'll update the post to see if this fixed it.

Edit2: nope didn't do the trick... any ideas/suggestions are more then welcome.