It is correct to whether that system works with the non -acted pedal there is continuity and when it is stepped it is disconnected, it can be commanded by another element if this works correctly, the easy way to repair would be to leave it directly, that is to say to locate the fuse that commands the brake lights and jump with the cable from the suich to aya, or take it to an electric is your option, that kind of problem must always be well expensive repair.