-When you get the lens out turn it on the side and look for this ballast. Turn the ballast counter clockwise to release the prongs and pull the bulb out.
-Pull the old bulb out and replace with the LED. *Most LED's only work when plugged in one way, they are polarized... so test the bulb BEFORE you button everything back up* If it doesnt lite then remove the bulb, rotate, then plug it back in.
-Install the LED bulb into the ballast rotate the ballast clockwise to lock it back in place and then line the two prongs on the back of the lens with the two holes in the body and push towards the front of the car until you feel it snap in place... replace the 2 screws (do not over tighten) and screw covers.