When doing replacement or upgrading on 2003 Hyundai HLD 150, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

High Beam and Low Beam Headlight 2003 9003
Back Up Light 2003 1156
Brake 2003 2357
Dome Light 2003 DE3175
Front Side Marker 2003 97
Front Turn Signal 2003 1156
Parking Light 2003 168
Rear Turn Signal 2003 2357
Tail Light 2003 2357
Roof Marker 2003 97