This is a New Western Spreader Control Kit (part # 67070) for tailgate spreaders #'s 500, 1000, 2000 and 2500.
If you want a variable speed controller, use part # 28866.
This comes with all the mounting hardware and dash bracket # 65516. It has a On / Off / Blast switch and a green light to indicate that the spinner is powered on. There are two adapter ports for attaching the controller to an adapter harness. This plugs into harness 63633.
Other than the name, this is the same as the Fisher spreader control # 9390 and replaces the older 67437.
We have many other controllers, if this is not the one you are looking for.
