Lancia Thesis (2001 – 2009) – bulbs specification
Year of production: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Type of production

A – All glass bulbs Snapped into position. Pull to remove
B – Bayonet connection bulbs Remove from the bulb holder by pressing the bulb and rotating it anticlockwise
C – Cylindrical bulbs Remove by pulling away from terminals
D – E Halogen bulbs To remove the bulb, release the clip holding the bulb in place
| Bulb | Figure | Type | Power |
| Main beam headlights/Dipped beam headlights | — | Gas-discharge | 35W |
| Additional main beam headlights | E | H7 | 55W |
| Front sidelights | B | H6W | 6W |
| Front direction indicators | B | H21W | 21W |
| Side direction indicators | A | WY5W | 5W |
| Rear direction indicators | — | LED | — |
| Front fog lights | E | H3 | 55W |
| Taillights | — | LED | — |
| Brake lights | — | LED | — |
| Third brake light | — | LED | — |
| Reversing light | B | P21W | 21W |
| Rear fog lights | B | P21W | 21W |
| Number plate light | C | C5W | 5W |
| Front ceiling light | A | Halogen | 10W |
| Courtesy lights | A | Halogen | 5W |
| Rear ceiling light | A | Halogen | 5W |
| Courtesy mirrors | C | C5W | 5W |
| Glove compartment | A | W5W | 5W |
| Boot | A | Halogen | 10W |
| Doors | A | W5W | 5W |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
