The marquee light up letters use glass edison bulbs to give them a vintage look. There is a very high probability that some of these glass bulbs will get shattered during shipping to you. There is also the possibility of the fuse blowing when you plug a letter in. If the fuse blows, the letter won't light up at all. No worries though, both of these issues are easy to fix. Extra bulbs and fuses will be included in the box with your rental order.
Unscrew the broken light bulb and then screw in a replacement bulb. BE CAREFUL OF BROKEN GLASS! You'll need the needle-nose pliers to remove the light bulb to avoid cutting your fingers.Video:
Take the fuse out using a small flathead screwdriver (or tweezers)
Put a new fuse in and close it back up.