Legend, pre printed. There are limited pre-printed descriptions available. You must indicate which one you need with your order. Currently available are: Alley light, Aux, Back up alarm, beacon, Buzzer, Compt lights, Deck lights, Emerg lights, Emerg master, Exhaust fan, flasher, Flashing lights, Flood lights, Front flashing, Front strobe, Grille lights, Heater, Horn/Siren, Intersec lights, Inverter, Left Alley, Left Flood, Left scene, Lightbar, Master, Pri/Sec, Rear Beacon, Rear fload, Rear load, Rear strobe, right alley, Right flood, Spare, Strobe, Wig wag and many more