NOTE!! Do not connect the brown cable to the same cable where the ignition coil/relay is connected to. There are signals on the cable from the car that can subsequently affect the speed signal. IMPORTANT!
Cable with straight connection to inductive sensor 03-185.
Brown cable: (+12V drive voltage to inductive sensor)
White cable: (not used with inductive sensor)
Blue cable: (0V ground to inductive sensor)
Black cable : (signal out from inductive sensor, to speed controller)