BlinkSTOP : home of the FREEWheel wireless steering wheel controls system. Button plates, pushbuttons, paddleshifters. Race car electronics and aftermarket upgrades.
B16L GT Wheel Button Plate
Porsche PDK Racing wheel - KMP Drivetrain Solutions
My new WRC steering wheel | RaceDepartment
Sauber F1's steering wheel has more than 35 buttons, switches, levers and lights