@Meir Yes, the front turn signals are still halogen, but I plan on swapping them soon.
@lkchris Yes, the polarity is reversed. There are plenty of people who have run into this while trying to swap leds into a Porsche. Some have opted to re-wire the connector to fix this. Here's an example on this forum:
http://986forum.com/forums/performance-technical-chat/38262-led-bulbs-depo-lights.html