Fits most trucks with the 4″ x 6″ dual rectangular headlight setup, including Peterbilt 379, Kenworth W900, and Freightliner Classic. Sold SINGLE.

Hard-wired with four plain wires – one ground, which powers both the amber and blue colors; one hot to power the amber marker lights; one turn signal to power the amber turn signals; and one auxiliary wire to power the single-function blue diodes. All four light sections change to blue when the auxiliary wire is powered.