Wouldn't it be nice if you could see stuff when you're in reverse? The factory glass bulbs rarely do a great job, but most of the time, are easy to access to swap out for a high power LED bulb. Since we're pretty big into lighting mods, we REALLY recommend the "Tail as Turn" module which allows cars with factory LED parking lights and brake lights to also function as the turn signals. This eliminates the need for a regular amber turn signal bulb, which leaves an empty space in the tail light for a SECOND REVERSE LIGHT! Since both sizes match perfectly, both in color and appearance, its an easy way to go from way brighter reverse lights than stock, to WAY WAY brighter reverse lights!