door switch dome light wiring?

[Curt Hayes]

Can somebody tell me which wires go to the driver's side DOOR interior light switch?
The schematic says Brown/Yellow, but I'm pretty sure both of the prongs on the back of the switch are used.
I have two unused wires dangling in there: green/purple and brown/blue. Anybody know which is the other one?
TIA,
Curt