Controller for electric quad bike 1000W 36V fits Crusader

YK31 controller designed for use in    direct current  single phase (2 wire) quad bike or similar system motors. Has low voltage protection. When voltage drops below 31,5V  the controller disconnects the motor so that it would not break and the battery lifetime would be preserved. Can be used for lower power  systems than shown on the controller. Same type controller can always be equipped with or without additional functions. 

Wire connection:

1. Red and black (larger diameter with connector block) - to battery.

2.Blue + and  yellow or white - (larger diameter ) to the motor

3. Red blue-to the key switch (they must be connected for the controller to work)

4. Red black -to dashboard indicator

5 Red black to the charging port (connected only when lead-acid batteries are used. If the system uses lithium-ion batteries these wires don't need to be connected)

6 Red black   break light

7. Yellow black  break lever

8. ,Black, red +5v,blue (can be green 0,8-4,2V)  throttle

9.Black grey brown - gearbox shift