Brake switch

[The Monty]

This has been done to death, but Im about to put a new spin on it.
My brake lights are lit, constantly. If I apply brake, I get no more light, they just stay lit. I know its my brake lights that are on, as my middle light is on as well.
Cruise control wont work.
Changed to a new brake switch. Now I get NO lights.
Took switch back, thought it might be broken, put in my old one. Constant lights again.
Got a new switch, no lights again, checked all my fuses, and the relay, all are in good nick.
WD40'd my old one, put it back in, so at least my brake lights are on, makes people aware of me on the road. I travel in non peak hour times, I dont see other cars on the road, but I still really need them to work.


So my question, WTF do I do next? Why wont they work?

Josh