Need some towbar advice

[Mar4ix]

Hi folks, thinking of putting a towbar on my audi a3, bkd engine, s-line model. Any one would advice where to buy, or some particular model?( Not really want cut my bumper), also maybe someone have a wiring diagram for attaching towbar electrics (socket)
 

Thanks

[A3_Ben]

Not too sure about where to find a tow bar or anything, I know the factory fitted ones has an additional infill in the rear splitter (the light grey bit sound exhaust) and I believe it was removable so you’d never know a towbar was fitted