ON/OFF and mode control, quarter throttle.

Wire meaning:
Black: Ground
Red: 5V
White: signal
Green, yellow, brown: three speed switch
Gary, blue: on/off button

Note:
On an ONYX Motorbikes RCR with speed mode cables (red, green, black), plug-in line to the throttle. Pictured with green connectors. That entire harness can be removed as it's just a safety to block out speed modes....