Update.
I've gotten rid of the car recently. The pneumatic shocks gave out on it and it was cheaper in the long run to just get rid of it and get another car that was in better condition than to try and repair everything that was wrong on that Lincoln.
Thanks for the help, Towncar. The problem seemed to sort itself out and I could turn the lights off again. Wierd. I never got around to looking at that switch though. More pressing things got in the way. Thanks for the help nonetheless.