The MotoSport.com Denali DialDim Lighting Controller With Harness includes ONE Denali DialDim Lighting Controller and ONE Denali DialDim Wiring Harness, each with the following features: Denali DialDim Lighting Controller: Denali's ground-breaking DialDim™ Lighting Controller features a multicolor halo dimming switch that allows you to independently turn on/off and dim two sets of auxiliary lights from a single consolidated wiring harness. The LED halo switch displays your exact settings and allows for effortless dimming on the fly. The blue halo controls light set one and the green halo controls light set two; simply double click to switch between the two circuits. The controller also features high beam, turn signal, and horn inputs to unlock intelligent flash features that can cancel your aux lights with your turn signal, flash your aux lights as a turn signal, or strobe your lights when you sound your horn.