try to place sensor on one of two wires and keep holding the brake pedal down as you do so. Other wire can be tested then. The test bulbs will illuminate, if power is connected and switch is working fine.
So I replaced the brake light switch and now it’s working fine. Apparently you cannot test this part...I also found that the drain for my sunroof, which runs down the front of my car right by the LCM (light control module) was leaking inside the car and thusly my LCM was completely frozen. Let it thaw and all was working well. Not sure now if the brake light switch fixed it or the thawing process fixed it, but it’s wirking great now...thank you for your help. Cheers and merry Christmas ruth