Thanks Sudesh, that was VERY clear

Anyway from the pics Dblock2151 posted i see that the M wheel does have the buttons.

Is this part you posted :
SPORT ST. WHL. LTHR MULTIFUNCTION SCHWARZ Part Number:32306762958
Price: $485.46
all that's needed or is the wire harness needed separately,

The retrofit at mrpaddleshift is around 1200 USD, so evidently there must be more to it than jut the wheel (all it says is wheel + kit)