| Marquee filler | 14 |
| Marquee element | 15 |
| Main St. light | 14 |
| Main St. brightener | 19 |
| Lure on the strip | 17 |
| Luminous sign | 13 |
| Luminous gas | 12 |
| Loud, as a color | 16 |
| Liquid ___ (refrigerant) | 24 |
| Like some highlighter colors | 28 |
| Like sign in concert hall | 25 |
| Like bright colors | 18 |
| Like Arcade Fire's "Bible" | 40 |
| Like an "Open 24 hours" sign, perhaps | 47 |
| Lighting gas | 12 |
| Lighting element | 16 |
| Lighted sign contents | 21 |
| Light-tube gas | 14 |
| Light up in a bar | 17 |
| Light type | 10 |
| Light that's a real gas | 27 |
| Light on the Vegas strip | 24 |
| Light material? | 15 |
| Light lighter | 13 |
| Light in the Loop | 17 |
| Laser element | 13 |
| Las Vegas glitter | 17 |
| Krypton relative | 16 |
| Kind of light in a psychic's window | 39 |
| John Mayer song about sign? | 27 |
| John Mayer song about an advertising sign? | 42 |
| Its gas gets attention? | 23 |
| It's next to fluorine on the periodic table | 47 |
| It's next to fluorine in the periodic table | 47 |
| It's below helium in the periodic table | 43 |
| It's a gas, except to Dodge | 31 |
| It precedes sodium in the periodic table | 40 |
| It may say "DINER" | 28 |
| It glows in a bar | 17 |
| It could be a sign | 18 |
| Inert lamp gas | 14 |
| Inert gas in vacuum tubes | 25 |
| Inert element used in lights | 28 |
| Helium-__ laser | 15 |
| Hardly drab | 11 |
| Great White Way light | 21 |
| Glowing bright | 14 |
| Glowing ad | 10 |
| Glitzy sign type, often | 23 |
| Glitzy sign | 11 |
| Glass tube filler | 17 |
| Glass gas | 9 |
| Glass bender's gas | 22 |
| Glaring lure on the strip | 25 |
| Ginza night glow | 16 |
| Ginza glower | 12 |
| Geissler tube illuminant | 24 |
| Gaudy light | 11 |
| Gaseous attention-getter | 24 |
| Gas used in store signs | 23 |
| Gas on The Strip | 16 |
| Gas of Vegas | 12 |
| Gas lamp | 8 |
| Gas in tavern signs | 19 |
| Gas in some glowing signs | 25 |
| Gas in some bulbs | 17 |
| Gas in many pub signs | 21 |
| Gas in glass tubing | 19 |
| Gas in garish signs | 19 |
| Gas in diner signs | 18 |
| Gas in commercial lights | 24 |
| Gas in a DINER sign | 19 |
| Gas for a bar sign | 18 |
| Gas discovery of 1898 | 21 |
| Gas at a diner | 14 |
| Garish store sign | 17 |
| Garish night light | 18 |
| Garish gas | 10 |
| Fluorine neighbor in the periodic table | 39 |
| Flashy sign | 11 |
| Flasher on the streets of New York | 34 |
| Eye-catching sign material | 26 |
| Eye-catching "Open 24 hours" sign | 43 |
| Extremely bright | 16 |
| Extra-bright, as a color | 24 |
| Element in vacuum tubes | 23 |
| Element in many pub signs | 25 |
| Element in Geiger counters | 26 |
| Element in diner signs | 22 |
| Element in advertising? | 23 |
| Element in advertising | 22 |
| Element having atomic number 10 | 31 |
| Element found in none | 21 |
| Element found in Geiger counters | 32 |
| Element below helium in the periodic table | 42 |
| Dodge compact | 13 |
| Dodge bright light | 18 |
| Dodge brand | 11 |
| Display lighting | 16 |
| Display light | 13 |