Couldn't find anyplace real appealing for the back tube. So they are drilled and placed right to the underside of the bumper. Just hope no one rear ends me, cause you can kiss that bulb goodbye. Oh same placement with the front one too, however its protected by the nose cone, a little bit. Was a do-it-yourself install, so the placement in front and back may not be the brightest idea, but it works and looks nice. Isn't that what counts, anyways?