That's what I did with the MIT led turn signals. I got the Limited mirror covers and installed the lights in those. Unfortunately, the MIT lights are not a perfect fit and require a bit of dremeling to make it fit properly. Not too bad but it would have been nice if the fitment was more precise.
True, just curious what the wiring would be so that I can see if I want to ever try it. Although, I find the MIT lights to be "good enough" and unless it's a really easy switch with minimal wiring work needed, I probably won't bother. I do like the Limited lights better though, and assume that they will be brighter (in the day as they are plenty bright even when just cloudy outside) than the MIT ones I have, although that may not even be true, in which case I would definitely not switch them.
I'm pretty happy once I got everything wired up. I got the ones with puddle lights, parking lights, and sequential signals. The puddle lights are very useful in the dark. The parking lights are brighter than I expected at night.
Wiring depends on your level of expertise, I'm a long time modder so stuff like wiring, soldering, and stuff are easy. I like to keep my installs OEM looking with loom, solder/shrink wrap, and 3M electrical tape. Some people are fine with butt connectors and T-taps, which will work fine.
The parking light power is found in the doors at the switches like I details a couple posts back.
I originally only ran the negative dome trigger and used 12V constant from windows but that proved bad because the doom like system has a leakage current when the system goes into "sleep" mode after 15 mins. What this does was provide a potential difference at the ground wire (5V) in order to turn off all dome lights that may have been left on. For my case, the the 12V constant and 5V on the ground created a 7V difference that left the puddle lights (2/4 LEDs) on after 15 minutes. I had to rewire this to the dome light 12V after figuring this out.
The turn signal wiring, I used the MIT instructions but its in the harness in the photo below. I think its thicker brown and yellow wires, you can check against the wire going into the headlight signals, same color.
The Dome light wiring can be found in the passenger kick panel, there is a light green (ground) and red wire (12V).
I ended up running the wires across the front floor under the carpet and behind the center area under the radio. There is plenty of room and lots of places to tuck and zip tie the wires to get to the driver side. Should only need to run three wires (driver side dome (12V and negative) and right turn signal 12V). You can ground inside the doors.
