I have recently changed an external infa red security light. I took a picture of the original wiring before fitting but now it won't turn on. I have had a look on line but i'm really confused about the wiring as one wire has no live.
Two feeds feed 1 - 1 black wire and 1 earth wire. feed 2 - 1 black wire, 1 red wire and 1 earth wire.
As you can see from the photo the black wire on the second feed isn't connected to anything.
The floating black which is unconnected , looks to be paired up with the red , in the one incoming twin and earthcable. There is is a possability that the floating black is a neutral connection. The black you have connected , which might have the red ommited /cut , might be some kind of switch wire and not a neutral. MY advice would be to get in an electrician to help you.
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