Mercury Grand Marquis Fourth Generation (2002 – 2011) – bulbs specification
Year of production: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Bulb specification
| Function | Trade number |
| Headlamp | H13 |
| Park, turn and sidemarker lamp (front) | 3157 AK (amber) |
| Cornering lamp (front) | 3156K |
| Tail, stop, turn and sidemarker lamp (rear) | 3157K |
| Backup lamp | 3156K |
| License plate lamp | 168 |
| High-mount brakelamp | 912 |
| Luggage compartment lamp | 212-2 |
| Rear reading lamp | 578 |
| Map lamp | 906 |
| Visor vanity lamp – Slide on Rail system (SOR) | 37 |
| Dual floorwell lamp | 906 |
| Glove compartment | 168 |
All replacement bulbs are clear in color except where noted.
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.