Hi
I bought my cup steering wheel from Gert
http://www.carnewal.com/products/P93...Steering-Wheel
Has just about everything you need, it been a while since I did the install I remember needing a pin to populate the electric box associated with the turn signals listed in this threadhttps://rennlist.com/forums/993-forum/667291-993-rs-steering-wheel-installed-wiring-photos.html hope this helps.
Mark