I am having an issue here, ongoing, but the old thread is too old to reopen I believe. I have a 96-up switch to fix the "melting switch" issue. Problem is lights get stuck on at random when I get out of the car, even in the middle of the day and they were off, they will just come on as I leave right after the car is shut off. I did some diagnostics, and removing the switch shuts them off. It is safe to say then that the issue is in the switch, or can it be Lamp Control Module?

I kind of have a similar problem... Please help..if you can....I have an 1993 bonneville sse and the lights stay on when I turn off the ignition....yes the switch is off and the things stay on forever till i remove the battery cable...then start the car....shut it off same thing...even removed switch completely from car..DRL problem? Twilight sensor prob?..I stumbled on your post on here...maybe you could send directions to dissabling the DRL/Twilight or your remedy?? to me?.please e-mail me at this address and help please!! jeas288827@aol.com

My 1995 is different from your car, regardless if the switch seems the same. The LCM (Lamp Control Module) in mine I believe is different than a 93, infact year-specific. There are no known issues with a 93 that I am aware of. Wait for a gearhead to post about troubleshooting for your 93 from a FSM (Factory Service Manual), there are always steps to be taken to determine the cause of your issue. I am very sure I fixed my problem recently by replacing the harness to the switch, it was melted when the switch melted, my lazy self did not replace the harness, just the switch, probably causing intermittent connections.

If I were you, I'd honestly start a new post, stating your issue, and what causes it, conditions, etc. I personally don't mind you posting here and asking since it is somewhat related, but the general "idea" behind BC doesn't allow this honestly, and your issue is more than likely entirely different than mine.