That's great, thank you for clearing that up. Makes sense now. Was thinking Roof lights?, Solar panel?or even emergency light as some hiaces used as ambulances.
Couldn't see it in photos on other vans so maybe it was a factory extra? The tv box is inside the van but your right any aeriels sat-nav/ stereo have been removed. Funnily enough still have the flare tube in
cab. These vans are interesting. ;-)