Dual function controller. Compatible with 3 wire lights with two power (+) wires (like LED boltz and Dual Color Micro lights) with dual colored LEDs per side. The individual power wires allow for the light to carry dual-function (i.e. white running light with amber turn signal or red brake light with amber turn signal). This module ensures the turn signal power will override the other running light power; turning the function off when the turn signal is engaged; providing a full contrast amber turn signal. Note: Compatible with 922704 (black) or 922703 (polished) Custom Dynamics LED Boltz and most others that require dual control.