I'm in the process of fitting a tv tuner, (used).

I have fitted the VIM-LR box along with MOST interface and though the TV icon has appeared, it is greyed out.

The VIM-LR box is a TV-500. I can see the TV tuner output in the video diagnostic mode.

Anybody any Idea's.

Click image to enlarge

Did you resolve this I would be interested in doing this myself  2006 Hst 4.2 Supercharged , Angel eyes , 2010 rear led lights , indicator / courtesy wing mirror leds, Khan 21" Diamond edition split rims, full spec (running LPG £0.60 per ltr)
2007 2.7 v6 Chrysler Sebring convert sport
2006 SRT8 6.1 ltr petrol 300 Chrysler gone
2005 X5 3.0d sport gone
2001 BMW 330 ci ltd edition mtec gone

maybe it needs enabling in the ccf..

You should be able to do it with the interface box, or at least I did on my old one.
Had to disconnect the battery and connect in order to enable.
I had to ring importers for details, as didn't work following instructions.

I had to reset the system by pulling the entertainment fuse after fitting the can box.