So this is a low voltage LED light? Did the electrician install the transformer (somewhere accessible) and run the low voltage cable through a hole in the wall?

A picture is worth a thousand words. Snap a photo of what you're seeing and post it.

Is this the light we are talking about:

Low Voltage LED light

That link contains malware.

My computer doesn't seem to be squawking about it. But maybe whatever it is is just silently being blocked by my system.

mskennedy-

What you describe is very strange. Is there one wire, or one cable (which would contain more than one wire, even if you can't see them all at this moment. A picture of what you have would go a long way toward resolving this.

In any case, no, you do not connect one wire to two wires. That's not how it works and you can cause damage trying this. No offense intended, but since you don't understand how electrical circuits and wiring work, please don't do anything on this without help from an electrician, or at least from a knowledgeable friend who won't create a dangerous situation, or get someone injured or electrocuted.

The site sets off both security alerts in Chrome for insecure things PLUS it attempts to open outbound connections from my browser which MALWAREBYTES blocks.

Well, blurry and overexposed photos aren't that great.

A better picture of this part would help.

Is it two wires that you have to separate? Or is it a single wire?

Any maybe pull the transformer out of the box so that we can see all of the connections done there.

Green is usually reserved for a ground wire and it doesn't look like that cable splits into two, but who knows.

Agree...

Was the electrician thinking that he was coming back to complete the install?

I'm wondering if he just ran the ground wire through the wall and left the other wires wrapped up in the box for safe keeping. Then once the light was ready to install, he'd use the green wire as a 'fish tape' to feed the other wires through the wall into the opening.

The problem with trying to do this yourself with minimal electrical knowledge is that you probably don't know what is already hooked up -- and what may still need to be hooked up -- in other boxes on this circuit. You can't just be concerned with the connections for that one box.