In my head I have been preparing for this day. I'm already trying to figure out how it is all going to be hooked together in the easiest fashion possible. In the past, old retrofit lights have been a real pain in the butt for some of my projects. That's not the case this time. Grandma's house already has wiring and switches in place. That's a huge bonus for just adding a couple fixtures. Daisy chaining a few lights together turns out to be a piece of cake.
Step #1- Lay out where the lights are going to go. Measure equal distances off the wall and find your spot. Check the ceiling for rafters, duct-work, wires and other obstructions if you can. At the very least you have to make sure there isn't a rafter in the way. This can be done with a stud finder or a trip up into the attic. Use the template provided in the box to mark you cut out. DO NOT CUT THE HOLE TOO BIG. You will never be able to cover it with a trim ring otherwise. You don't need to go full Hulk Hogan on this stuff. Make the hole small and enlarge it too fit.
Step #2- Using a drywall saw (or a an old sawzall blade) cut the hole out. Ask your beautiful wife to hold up a box to catch the insulation that is bound to fall to the floor. The insulation will most likely be fiberglass and make you itch until sometime next week. Now we can run a wire over to the existing light fixture.
Step #3- Hooking up the wiring is easy. You can simply turn off the switch and the power will be off at the wires. Sure you can flip off the breaker, but that's all the way outside. These retrofit recessed lights came pre-wired with simple push in connectors. Strip the wire back and match the colors up.
The recessed light gets pushed into the hole and then the trim gets added. I opted for the trim/baffle and LED light all built into one. It is the same cost as buying all the parts separate and way easier.
Step #3- Snap the little spring thingy's into the light fixture and... VOILA! Super sweet LED lighting.