Hi - I have just taken a motorbike rack off of my 1994 Hymer B564 (Fiat Ducato) - it is complete with electrics, also has a tow-bar fitted to it. There is also a ramp made of the same steel plate as the rack itself and it is held in place by butterfly nuts.
If anyone wants to make me an offer I am sure we can come to a deal of some sort.
Phil