Re: corner bulbs
Pair of 45 degree angled needle nose pliers and some hand maneuvering. They're twist lock sockets, so grab onto the grey part of the twist lock (has little tabs on it), and twist them counter-clockwise. (Righty tighty, lefty loosey)
Pull the bulb out, wedge a new one in there. Put bulb into headlight, twist to the right to lock it. Done.
I can do mine in about 6min. Changed them from stock to green, to UV purple, to blue, to red (current). 194 style wedge bulb. I get the 6 LED version from superbrightleds.com
Disclaimer: I have a 2005 Base Coupe, no idiot lights. The bulbs work fine, but with a limited or SRT i'm sure you'd have a bulb out indicator.
PM me if you have any questions
-Eric