I have not installed any angel lights on my car before, but I have taken the old ones out and put them back in, I imagine you put the new ones in the same way that you take the old ones out...
1. Release the retaining clip & remove the accesscover from the rear of the headlight unit.
2. Disconnect the wiring connector.
3. The headlight is held in by 3 points at the top that are screw into a brace to hold it in place, unscrew those (you may need allen wrenches)
4. Pull the headlight forward and out (the signal light may come out also, im not sure, cant remember)
5. Install the new lights the same way you took the old ones out...