Hello everyone: I turn to this community for the following problem. Not long ago I decided to add a lantern (the famous turtle) to add lighting to my patio, along with the one I already had installed. I made a parallel connection to the two lanterns, and put them LED lamps. So far, all good. For two weeks or so, it worked without problems. Then one morning I discovered that the two lamps were on when the key was in the off position. I immediately thought that the rocker could have broken. I open the light box (three points), do a continuity test on the key and it works well. Then I discover that, having removed the phase and return wires from the key, the lamps were still with light. I put the pager on the loose return cable and turn on its lamp. It catches my attention and I thought of different options, but none convinces me at all. Before me, the connection had been made by a registered electrician, more than two decades ago, and so far everything was going smoothly. In the three-point box, the phase cable (black) is connected, on the one hand, and the corresponding returns, on the other. The key in conflict is in the middle and, to add more confusion, the return of that key is black, like the phase, when the other returns are red. And I can assure you that the same electrician did it. The keys must be from the '80s or early' 90s. The key in question has a green key and has a larger body where it is wired, and the other two are white with smaller bodies. I clarify that, when I did the installation, I had no need to intervene in the box since the circuit was already made. All I did was add a lamp to the existing one. If someone can give me any help, I will thank you very much.

It is due to a bad connection, I have seen similar cases - I think {the lamp will work if you move the third key {, this is because you installed the lamp connection incorrectly and at some point someone moved the third key and the fault was detected, it will be necessary to rewire