Well now I am TOTALLY confused. 
I've just taken delivery (thanks A8parts  )of a 4D0 035 530 aerial unit with the "old type" connectors, with the original aim of dismantling it just to use the connectors.
But looking at it I really have NO IDEA where it goes and what it does!
It has no external power supply and only has 6 active sockets (of 8 - 2 have nothing behind them). It happens to have a few "cut off" leads/plugs with it, I presume originals as they've been cut (though one has been snapped out).
One group of 4 sockets have "thin" leads, so I "presume" these are TV aerials - but are they input or output? Logic says they should be the leads from 4 diversity aerials, but my TV tuner has 4 leads to it. And it really wouldn't make sense to have 1 aerial lead into a box like this leading to 4 to the tuner - or would it? 
The other conector block only uses 1 and 4. #4 has a thin TV-type lead and #1 a stub of thicker coax that could be a radio lead?
So my interpretation of this box is that it takes input from 4 aerials and feeds a radio signal down one cable and TV down another. Power must come from outside somewhere, up one of the cables. I'll open it up soon to see if that gives any clues.
This does make me wonder how my car is wired up?
Thoughts anyone?
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions and extended leather. Ski hatch retrofit. Aftermarket reversing camera. DVB-T and XCarlink now removed as redundant.
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".  (Even rarer than a D2 S8!) Oh, and a brand new engine at just under 30,000 miles on the factory one! 
Finally: gone, but not forgotten.....
1998 D2 PF S8. Agate Grey/Platinum. Every option (I think) except electric rear seats, Tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon. Added Auto-dim mirror, Leather seats, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
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