I have replaced a pendant light in a bedroom with a 4 spotlight set the wiring was
3 red -live
2 black neutral
Single black with red sleeve terminated on its own with no wires coming from the terminus
Earth

I have connected the wires as follows

3 red to the live to light
2 black to the neutral to light
Earth to earth
And terminated the single black/red to a spare in the terminal block

Turned on the breaker , light came on, but will not turn off should the single black be connected in the new light?

Dennis,

What country do you live in? Do you know what your circuit voltage and amperage are?