That sounds like the way it's supposed to be. The turn signals are not supposed to work with the key off but the brake lights, emergency flasher and headlights/taillights should still work. The turn signal switch cancels out one brake light when it's turned on so that the light will flash on the selected side. It will do that whether the switch is on or not....it's a mechanical connection in the switch....so if the key is off (no turn signal power) and the turn signal lever is turned to one side, it will still kill one brake light (which does work with the key off) Of course, the question that begs to be answered is, why are you stopping and signalling turns with the key off?? :?: