The included switch is a basic three-position switch that you can surface-mount somewhere in your cab. Most folks choose to actually keep it hidden under the lip of their dash, since the novelty of switching the emblem colors wears off pretty quick. In theory, you could use your upfitter switches, though it would require custom wiring and it would be tough to keep all three light color functions using just a single upfitter switch, since the upfitters are all only single-function.