Where does this go?

[wackyjacky1]

Hard to tell from your pic: Are both wires black, or is there one black wire, and one black & white wire? From the diagram for the N (not N2), the black & white one would be the ground ("mass" or "earth" they call it) and would plug onto the middle prong. The solid black wire would be for the current and would plug onto the top (lightning bolt) prong.

But it sounds to me like you've got it hooked up correctly.

[sundial]

Wacky, both wires are black so I guess it's fine to plug it into the first and second prongs. At least that's what it looks like to me. Thanks for taking a peek at the diagram.