Head/tail lights on but switch is off ????

I have a 95 Bonneville SE. The car is parked and turned off with the light switch off and the twilight sentinal off but the lights are still on. Anyone have same problem before? I wonder if I need to replace the light switch or the twilight sensor. Any ideas would be appreciated.

I'm not sure what caused the lights to stay on but I disconnected/reconnected the battery and now the lights are working correctly and the twilight sentinal is working and the switch is responding. I wouldn't be surprised if this crops up again and I eventually need to replace a switch. If anyone else has had this problem I'd appreciate some input as to which switch I'll need to replace.

You have a defective headlight switch. GM had on a recall on 95 built in
94. lookup the recall # and description with the urlhttp://www-odi.nhtsa.dot.gov/cars/problems/recalls/RecallSearch.cfm

The switch needs to be replaced with the correct option. I have had to replace my with this option 5 times. GM desing a pieace of junk.

I have seen this happen due to a defective module from one of those after-market alarms. Disconnecting the battery might have reset it temporarally.