Where does this black wire go (3 pin drivers door jamb switch?)

Thanks but I’m trying to figure where the black wire goes in the other direction…. I found my driver’s side dome light switch to be bad and have ordered another one. It seemed to me that the black wire should go to ground - but it doesn’t. I’m wondering if it goes thru something else before going to ground. I have my instrument panel unplugged - so I don’t know it that might be the reason the black wire doesn’t go to ground. I’ve checked the black wire going into the back of the instrument panel and it isn’t connected to the black wire going to/from the dome light switch.