Honda NSX-T 1998 Manual page 268

Main Menu
Lighting System
HID Bulb Removal
Table of Contents
1. Make sure you have the anti-theft code for the radio,
then write down the frequencies for the radio's preset
buttons.
2. Turn the combination light switch OFF.
3. Disconnect the battery negative cable, then
disconnect the positive cable.
4. Remove the Torx bolt using a Torx T20 bit.
5. Turn the cover 45° counterclockwise to remove it
from the headlight assembly.