I'm working on a plan for retrofitting the OEM side markers with dual-intensity ("dual filament") 3/4" LEDs. This would allow the side marker to function as both marker and turn signal. I know how to go about making that work with incandescent bulbs (cut side marker ground and splice into turn signal), but that obviously won't work with LEDs.
I think cutting the "shroud" for the plug off the back and drilling the hole out to 3/4" is all that's going to be necessary, but I won't know for sure until I dive into the project.
2013 Billet Silver JKU Sport S, 6-Speed, TF Leveling Kit, Spidertrax 1.5" Spacers, 285/70R17 Firestone Destination M/Ts on OEM Sport wheels.