Up for sale are TWO Whelen HALO rear systems. Each system has two bulbs, control box, control box harness, one short cable, and one long cable. I purchased these in hopes to install them on my Tahoe but never could get it figured out so I never put them in. I do have some extra cabling and Deutch connectors that i can include with each system. You can get one system and run two rear bulbs, or get both and run four rear bulbs and have an extra control box to put back as a "just-in-case." Asking $350 each or $600 for both. Shipping not included.