Connecting an exterior string of patio lights to an existing permanent exterior CFL fixture

Question

Context

I have a small covered patio illuminated by an unattractive wall-mounted CFL fixture. For an improved ambiance, I have hung a string of LED patio lights that are plugged into an exterior outlet.

I would like the convenience of being able to switch the light string on/off from the wall switch inside the patio door (currently wired to the CFL fixture), rather than reaching behind the patio furniture to get at the outlet. To that end, I would like to somehow power my LED light string from the circuit that powers the CFL fixture.

Below is a photo of the inside of the CFL enclosure for reference.

Constraints

I live in a condo building that has a by-law regarding alterations to the exterior of the building.

Obtain approval before altering a strata lot or common property. Before making an alteration to any of the following: the exterior of a building;

I'm looking into exactly what this means for my purposes, but I suspect a "temporary" solution is preferable to any permanent electrical changes.

Question

How can I safely wire up my LED light string to the existing CFL fixture, such that the light string (rather than the CFL) is controlled by the indoor switch?

Ideas

Some ideas I've considered, but am not sure how to evaluate:

• An adapter of some sort to adapt the CFL socket to a three pronged outlet, similar to this Amazon adapter. I haven't been able to find one for CFL sockets, and I suspect they don't exist.
• Splicing an outlet in parallel with the CFL fixture (on the 120VAC line, not the stepped up line into the CFL socket) and inside the CFL enclosure. Then just leaving the CFL unplugged.
• Replacing the fixture entirely with an external outlet. This is less ideal from the strata perspective.

Answer 1

Of course, the "best" thing would be to get approval for a licensed electrician to add a switched outlet outside. Or use a remote-controlled outlet, some even have regular-looking-but-wireless wall switches you can stick next to the light fixture's switch with removable adhesive. Or maybe invest in some alexa/homekit/smarthings junk.

The socket cannot be adapted, the cfl gets high voltage from the transformer. I might consider ripping out the transformer and cfl socket, then putting a normal ceramic bulb socket on the bracket. Many sockets have the black and white wires pre-wired; just match them up with the leads show using wire nuts or wagos. Might need some epoxy or jbweld to attach the socket to the bracket, depending on how it attaches. It doesn't have to be very sturdy, but it needs to be able to take some heat, so no hotglue.

It would then be fully functional with CFL/LED bulbs and nobody would notice or complain. At that point, a simple "socket-to-plug" adapter would give you a plug for a DC adapter for your LED strip. Use an inline GFCI if possible. I don't know how you would hide the wires and keep the wall wart dry, but I think this idea at least solves your wiring issue within the confines of your HOA and pre-sale home inspectors.

Answer 2

I would install a snap in receptacle /panel mount receptacle. This would take a little cutting on the flat side making a hole large enough for the receptacle to snap into then wiring the white to white black to black inside the fixture itself. When I searched for a snap in receptacle I found them for as low as $1.50-$10.00 many to choose from. , I might see if there was a box behind with a ground and bring that into the fixture and ground the green I did see a 2 wire Leviton 1306 if this was polarized it may also work but I prefer 3 prong grounded receptacles.

There used to be an exception for receptacles over 5-1/2 or 6-1/2 feet where GFCI protection was not required and that’s when I used to do this today a GFCI breaker would be needed to any outside receptacle but this is a way to add a receptacle to an existing circuit / fixture. That would meet your requirements without breaking the bank.

Note you should always use UL listed products and methods when making a modification to a personally owned device or system. Can not be made for resale without a complete evaluation of the assembly.