I have a similar problem with the same LMC part #7 courtesy light housing, 47-4247 (license lamp lens). Mine are made of a gray plastic and are either sun rotting or heat degrading split and cracked and do not stay tight in the F250 bumper hole. Just a thought, if led lamps were used instead of incandescent, the housing temp and bulb sockets would stay cooler.
PI mine did the same thing so I replaced them and installed white LEDs. So chris needs 1 bulb socket Jarrett 2 license plate lamp sockets PI 2 license plate lamp sockets I'll be on the lookout.... Anyone else need anything?
for ****s n giggles check out the SD section and see if you find any tow mirrors. i would perfer them to be powered and have the turn in the mirror with the flat connector. shoot me a text what you find.