Hey everyone! Here's a list of every bulb you'll need to run LED lights on your 1st gen TL!
I highly recommend doing this conversion, it's INSANELY better! 3x brighter vs stock, and very easy!

Headlights: H4/9003 LED (3 Prong!)
Parking Lights (side headlights): 168/T10 LED (194 fits)
Fog Lights: H3C LED (2 prong ONLY)
Blinkers: 7440/T20 LED

Taillights: (Brake Lights Aswell):
7443 CANBUS LED (non CANBUS will throw "Tail Lamp" light on dash)
Parking Lights (Side Tails): 168/T10 LED (194 fits)
Reverse Lights: 7440/T20 LED
License Plate Lights: 168/T10 LED (194 fits)
Interior Dome Lights: Phillips DE3175W LED (2)
Door Lights: DE3175WLED (4)
Glove Box: DE3175WLED (1)
Trunk Light: HELLA 921LED65K (1)
Photos of mine below!