TRADITIONAL C-9 BULBS The traditional C-9 bulb is a larger bulb that is used to define a distinctive roofline. They can be made from strings of clear, colored or multi-colored lights. Mobile Illumination uses its proprietary process of installing the lights so that each and every bulb faces the same direction and gives most elegant look to your home or business. The traditional C-9 bulb works well in combination with mini-lights used for shrubs, bushes and trees. C-9 light bulbs are also an excellent way to accentuate ridges and peaks of a roof. Also Mobile Illumination meticulously installs the lighting on your roof. We often use white wire to ensure the wire matches the eaves, rather than the green wire, which can be an eyesore against a light-colored eave. Please rollover the small images below to enlarge them and see a few examples of the variety of rooflines that use C-9 bulbs..