Hiniker Tailgate Spreader Controller # 79204232.
This control is used with Hiniker SS600 and SS1000 stainless tailgate receiver hitch spreaders. It has one variable speed knob to control material spread rate, a vibrate button for an optional vibrator kit, a blast button to spread a burst of material and a power button to switch the unit off.
This control has four 2 pin plugs. Two main plugs on leads and two plugs in the back for a vibrator and light kit add on.
We also have the manual for this controller.