Door jamb switch: how does it work

[motornut]

there is a black rubber gromment (bout an inch wide)going from inside the piller to the door switch ,holding the wire it's a white wire bonded to the grommet
look left of the e brake pull off and slightly above the hood popper(same area pass side too)
@ the door switch
the white is the dome light (going to ground lites the dome)
second is the key in ,door open buzzer wire