Turn off the power supply at the circuit breaker before replacing the light.
Remove the bulb from the recessed light housing. Remove the housing from the pan according to the fixture manufacturer's manual. Unscrew the Edison socket housing. Let the socket housing and conduit hang through the hole in the ceiling.
Separate the enclosure disk from the Edison base tri-clip that is on the retrofit fixture to allow room for installation. Screw the retrofit Edison base into the socket on the existing housing assembly. Pull the wires inside the retrofit fixture can.
Place the tri-clip tabs into coordinating slots in the enclosure disk. Press the enclosure disk on the socket housing. Line up the enclosure disk notches with the housing clips. Bend the tri-clip tabs outward for a tight fit.
Surround the socket housing and disk assembly inside the metal clamshell case. Align the two halves of the case with the guide tabs. Check that the disk-side conduit exits through the top-center opening and the housing-side conduit exits through an opening on the side of the case.
Force off the set of adjacent removable tabs that provides the most ideal opening route for the housing-side conduit out of the case. Screw the case halves together where the two fastening holes align.
Adjust the recessed can retrofit fixture clips to the highest point in the slot. Tighten it gently using wing nuts. Push the clamshell case, electrical connection, and leftover conduit into the ceiling. Place the can into the hole in the ceiling.
Loosen the wing nuts on the can’s clip. Pull the clip down and tighten the wing nuts. Repeat for all three clips.