Peschges VP 6 --V

Hello
I am still using a VP 6 but it seems to have lost it's separate GPS
receiver which is a dinosaur anyway.
The set seems to still work alright only it does not get any Satelites
to play with etc.
I was wondering whether any body has tried to drive it with a
Volkslogger? The VP 6 supplies its receiver with
12 V I guess, so the VL would have to get its 4.5 volts from somewhere
else, one would make a special cable.
There is also the question about the GPS protokol?

Possibly there is a GPS receiver 12V that one could adapt. I do not
want to go to the Euro market.
Another way would be to find a VP 8 that someone has lying around
collecting dust. That one would hook right in.

Anyone?
Dieter