Please go easy but this is a question that I have been meaning to ask for ages but keep forgetting. On the underside of the lid of the dash top compartment what is the round black plastic disc for ?   :peek: 

Is it similar to this Tomtom disc?

 

Is it similar to this Tomtom disc?

 

Yes but it is on the underside of the lid of the compartment on the top of the dash, your pic has a ridge around it and my one is completely smooth

 

I have a round black disc attached to the right underside of this

Me too , for a Garmin suction mount. Easier to reach than the windscreen. And hidden when not in use.

Me too , for a Garmin suction mount. Easier to reach than the windscreen. And hidden when not in use.

Thanks for that, now I know, perhaps I'd better get a Garmin sat nav now as my Tom-tom is getting on a bit now :thumbup: