I have one outside security light to the side of the house and have placed an additional one to the rear. I have looped the light from the existing one as I want it to work from a different switch.
Everything is wired up and I can't get the new one to work. I have checked the wiring four times to make sure it is correct but it ain't coming on. In the existing light, I have placed a new red into the loop of existing reds, a new black into the neutral terminal and earth to earth. In the new light, I have the black from the old into the neutral terminal, earth to earth, red from loop to a terminal block with another red leading to the switch and the black from the switch into the switched live terminal. The new bulb also looks fine. I'm a bit stumped!