I recently purchased and installed a new pair of projector headlights and LED's on my 2002 F150. The headlamps and turn signals are plug and play but the LED's need to be wired in. Anyone have any clue on how and where to splice in the LED's I don't want them to always be on, just whenever I have the parking lights on.

 

So splice them into the parking light leads I'm thinking? There should be three bulbs on your headlight assembly: parking, headlight, and turn signal. Not sure which setup you have, but if they are amber then you should wire them into the turn signal light. If they are clear, then parking light is your best bet.

Light to light, dark to dark. Easy Peasy. Shouldn't take more then 10 minutes tops. If you're still perplexed, check out this how-to article:
http://www.stylintrucks.com/Articles...l/article.aspx