So I ordered some dual filament T20 wedge base LEDs for the GT, and tried to fit them just now. They're not behaving normally: - If I partially insert a bulb then it lights up but when I go to press the brakes they do not get brighter. - Then when I fully clip the bulb in, it doesn't light up at all. If I then switch the bulb round 180 degrees as you often need to with LEDs, then it turns all the brake lights on bright (including spoiler brake light). If I use a single filament (brake) bulb on the bottom, it functions as normal but the dual ones are giving me problems! I fitte