Road Champions MR CS150 Pin 1 IN BASSO 1 GND 2 GND 3 GND 4 -12V 5 STEERING 6 GND 7 VIDEO 8 SW GEAR --> +12V 9 LED (CATHODE) 10 N.C. 11 N.C. 12 +12V 13 SW ACCELERATOR -> +5V 14 SW BEGINNERS RACE --> GND 15 SW COIN --> GND 16 COIN METER + 17 SPEAKER 18 SPEAKER 19 + ALIM. B.F. 20 +5V 21 +5V 22 +5V +12V | | 1K | < 5K POT > < <---- STEERING > < | | 1K | | -12V