Neil.
I'm off work with the flu today, so thought I'd do a few expereiments to see if I could comply with your request - so here are a couple more pathetic efforts from digital camera. I set a level board up on top of one of the pianos, against a blue wall, and blasted away. I put 75 1002 in the picture for a bit of reference, and added my Gueterzugbegleitwagen for authenticity - these trains would have been away for a while and a Messwagen/Geratewagen would be there too so this thing of mine fits pretty well.
This overview gives you a feel for the model proportions, you can see the poles are on the front wagon, the wire on the back - these accessories out of real wood by Heico incidentally, and they look pretty nice.
This shows the wagon number detail for the pole-wagon, the numbering and other writing is, naturally, different on the other wagon.
This view is the other direction, showing the Fernmeldebau writing on the coils.
I think you need one Neil... it was 56Euro from ETS, while the 75 1002 was only 126Euro in the same order. In these pictures technically the 75 is not correct because it has the DB emblem and is about 5 years out by date, like many Liliput locos it is around the 1960 era. I should have used the 86 or 93, which are dated in the same period as the wagons (1955 to 1957) for their next repairs, but I wanted to show the 75 off!! The 75 is a real gem, I am very surprised by it, lights on all the time, smooth runner, beautiful detail and capturing the proportions and character of the loco very well.
Cheers,
Phil