So, I've finally gotten round to fitting the towbar on my A3. I choose the Westfalia detactable towbar system and found, on a 'popular Auction site' the genuine Audi 13 pin electrics kit (8P0 055 204G).

Fitting was quite straight forward (Thanks to others on here for the 'How to ' guides which helped me remove the light clusters, boot trim & rear bumper). I bought the lower bumper spoiler (with the towbar 'pocket') from Audi (£95) and had my local friendly garage spray it in Ibis white (£60 inc paint).

I had the mechanical side done and the bumper back on in an afternoon. The electrics took another day! Not because its difficult, but because it involves removing a fair bit of the interior trim & routing cables from the boot area to the fusebox. The kit, although badged Audi is actually Westfalia. Its obviously been translated from another language but its still quite clear on what to do. It does involve opening up a few existing connectors in the cars' wiring harness & exchanging some terminals across but its not too challenging.

The only disappointing thing is that the kit doesn't include a permanent 12V connection to the 13 pin socket, yet, strangely, does include the switched 12V connection. The permanent 12V terminals ( pins 9 & 11) are brought back into the boot and terminate on a 3 pin connector.... I'm now trying to find the mating half to this. The Audi part number on the connector is 4B0 971 993. Does anybody know the part number for the mating half of this???