I did a search and could not find any threads on this issue, and my factory service manual is not very clear about how to go about testing. so I am coming here hoping for some assistance. I have a 1993 Buick Roadmaster Limited Sedan. This issue started after my turn signal flasher decided it didn't want to work anymore. So as a quick fix I swapped the Hazard flasher over so I could have working signals. For ease of access I unplugged the chime module, and then re-installed when I was finished. After I finished I noticed that the "Lights On" chime now sounds anytime I have the key in the off position with Twilight Sentinel on. The lights will turn off normally when the time expires (I like to keep mine on the 3 minute maximum) But the chime will sound the entire time until the timer expires as if I was using the switch. I've checked all the fuses, and grounds as indicated in the factory service manual, I've tried wiggling wires around, I even tried popping the bad flasher back in, but to no avail. This is mostly just an annoying issue but I'd love to get it taken care of if anybody has any ideas.