I dont know Where to connect this cable

Solution
That looks like a weatherproof DC power connector. I am guessing that where ever you bought the LED strip from, has DC transformers with the appropriate male plug. The other end of the LED strip probably has a plug on it to daisy-chain strips.

kanewolf

Titan
Moderator
That looks like a weatherproof DC power connector. I am guessing that where ever you bought the LED strip from, has DC transformers with the appropriate male plug. The other end of the LED strip probably has a plug on it to daisy-chain strips.
 
Solution