I checked the LEDs both my JamStrait & Dioded Dynamics. When they are off, they are off, when they are on, they are on. There is no "bleeding" no light is emitted when they are off. I removed the plastic lens infront of them to look directly at them, and didn't see anything. I've had my leds for several months and have never had a dead battery or any adverse effects at all.
Also, when is there going to be a Stage 1, 2 & 3 Kit like there is for the older model Grand Prix? Hasn't the 2004+ models been out long enough to get these kits designed so people can easily buy a whole kit for interior lights?