How to control 1000w light instead of using external controller

Hello I have a Gavita 1000w HID light which can be set at various light outputs show below. I would like to take the Controller out of the mix and wire straight through modules or whatever I need to turn the light on/off (I dont need the 50%-115% or whatever it is. The spec of the light is:

The spec of the low power Controller is here (I have already solved the fan so I dont need the controller for fan 0-10v.:

Cheers