door latch/dome light problems

[ed3196499]

Dome light wont go off and doors do not auto lock.

I have searched and tried all the wd40 tips and no luck. I am guessing I have a bad door latch but haven't been able to narrow it down to one particular door. I am going to pull the panels off and try to figure it out this weekend.

any ideas how to find out witch door is the culprit? I dont have anything that tells you what door on the dash just the red indicator light.

Any input would be great

Thanks

Ed