These lights are wired with the standard two male bullet style plugs, ground and hot, to light the red side, plus an additional male bullet plug that powers the blue diodes. Both colors are a single function application. Mounting hardware (included) is hidden by the chrome bezel after installation. This light measures 6-5/8″ overall length, with 4-5/8″ between mounting holes (measured center-to-center). The face measures 2-1/8″ at the widest point, and the light is approximately 1″ deep.