I've tried searching for images but can't find any - what should the aerial look like on a non-satnav p38?

At the moment all I seem to have is a little stump with a bolt/screw in the top (haven't had a proper look as yet).

Have thought about doing a retro-fit of the nav system so wouldn't have a problem putting the GPS version in but still - what's the 'standard' aerial?!

The radio aerials are in the rear quater windows. The GPS aerial is under the plastic trim panel at the bottom right of the front windscreen .

Don't you (the 38A) have the aerial wires in the rearmost RH side window?
I'd expect two aerials there, a very short single strand for the remote unlock facility, and a more noticeable one for the radio. ISTR some later models had another radio aerial in the rearmost LH side window. ISTR (again) that one was FM and the other AM, but I don't recall which was which, you will have to consult the manuals for that.

I'm going to guess that if you have a 'stump' in the roof it could have been for a fitted telephone.

HTH

Ahhh, that would make sense!

Thanks guys