Door ajar sensor loose - 98 mustang gt
 

On my cars driver side door, I can easily move the door ajar sensor around (when the passenger sensor is solid in its position). For 3 days now, while I'm driving the dome light would come on and the car starts beeping at me, and manually pushing in the sensor stops the noise. I've seen alot of stuff about using WD-40 (try'd it, didn't work at all). Can anyone point me to a video on how to remove the switch? I need a quick fix for the next few days