HI again
I have a sept 05 model.
I have found this on the web
http://www.advancedautovations.com/e530402.html
which implies you cannot have both voice and assist. My assist does not work anyway it says "problem with phone".
I took the assist module out to check the connector just to see but it was different (not the blue one) so I do not seem to have blue one at all.
John