Audi: Where is antenna booster on 94 cs100 wagon?

Hi,

I'm trying to locate the antenna booster on a 94 cs100 wagon? . I
have read that is located either under the rear seat or in one of the
pillars on the drivers side (I'm not sure which pilar it might be in).
I understand that a white wire powers it but I sill can't seem to find
it.

Can anyone help?

Thanks

Well today with renewed enthusiasm, I removed the interior trim around
the rear end of the vehicle.

Much to my surprise It looks like there are two coaxial wires, one
running up the drivers side rear pillar to what I believe is the roof
mounted antenna. And the other running up the passenger side pillar to
(maybe the rear window defroster) . The one on the passenger side is
paralleled with a white wire! But it looks like the coax- white wire
runs through a flexible hose (connector) to the rear lid (station
wagon door).

This would led one to think that the booster is somehow in the rear
lid! Can this be?

Mimi