Wish I saw this earlier to help you. Since you said concave mirror I assume you have tow mirrors. I just did this last month, got screwed on ebay swapping an OEM ebay mirror that rattled for another used one. New one was perfect but turn signal was out on it. Swapped old turn signal to new mirror and bingo.
I never did the puddle lamp but I assume it looks like it has flanges on the lens and it just gently comes out.
For the turn signal, point your adjustable larger mirror all the way our to make it easier to slip your finger behind the convex mirror. I find it easiest to be flipped down in horizontal non tow mode. Make sure your convex mirror is completely in the middle and even on all sides. Slide your finger to the bottom right corner and top right corner. Gently begin "tugging" directly out at the same time top and bottom. DO NOT wiggle twist or turn. Work it nice and gently and the convex mirror should pop directly out. If your gentle nothing should happen to the convex mirror clips.
The turn signal is secure with I think a T10 torx? Whatever the odd star pattern screw is, cant remember off the top of my head. The wiring harness clip is right there for you to just pop out. Just be sure to allign the flanges when replacing the turn signal, and the signal has a little line of paint either silver or black depending on your mirror trim. Just be sure to line that up. Like a dope I put it in wrong, and at least I caught it before replacing the convex mirror.
Once your turn signal is secured hand tighten the screw, give it a little wiggle check it, and replace the new wire harness plug. Check the signal and your good for the convex mirror.
Try and line up the convex mirror clips and push it evenly in, work it until it snaps into place. Check the convex mirror because when I replaced it I missed one clip and it was a little lose, and luckily I didnt lose it on a speed bump.
The key is just remove and replace the convex mirror evenly and gently.
Hope it worked out for ya if you did it already, and if not hopefully this serves purpose for someone in the future. Any questions let me know, I should have thought to take pics during the swap. I even schooled my dealership I inquired to them prior to doing this, and they had absolutely ZERO knowledge the signal was even replaceable, or how to disassemble the convex mirror to access the signal.