Remove the retaining ring at the top of your 1991 Acura Legend ignition switch. The ignition switch cylinder will slide out. Remove the wiring harness from the end of the ignition cylinder. Reverse the process to install your new ignition switch cylinder.
"Considering that there is no such thing as a 1998 Acura Legend, I would dare say that it is impossible." I have a 1988 Acura Legend LS and I am dealing with the same issue. If you figure it out, help me out!
if its an 88 acura legend then you will need to remove the couple of bolts that hold it down and take it to the local auto store. like other cars you can just replace the bulb but on these acura you need to replace the whole headlight unit
The switch is located on the brake pedal. Undo bolt & wire & replace switch. Note adjustment before removing old switch if you've not replaced one before. You my want to use a mulitmeter (digital with continuity function) to test it before you buy one.