no installation instructions

This transformer was bought to replace another failed. I followed the advice of other reviewers and took longer than the original power.
Oops, it contains no installation instructions, ouch ... Just a few safety precautions.

My knowledge of electricity level is pretty average. Sufficient to meet the basic safety instructions, cut power, namely a wire stripper, put it in a hole and screw it up ... In a little groping, I managed to get this one, you have to completely disassemble the screws and remove the plastic caps on both sides to access places or connect bare son.
We guess that is the side entrance (the one with Volt?), The side which is the output (the one with Watt?), And starts to connect son (well, the thread color that to matter? It not say ...)
Go zou, fingers crossed, we commend the current, turns on the light and miracle! It works!

Finally my very average electricity and without notice, I managed to get out, but hey, I would not do that every day ...

So far, no problem with the product, if there had been a notice, I would have more stars.

EDIT: 6 months later and still functional