Does it matter which way round you wire them up?

I had mine set up like this


Now the green wire was the main source, i cut the wire as i needed to take a feed off it. I didnt think it mattered how i wired it up, so i had it wired up like that. The Lights that it was suppose to feed didnt seem very bright, so should i remove the green wire which is in the top of the scotch lock and place it on the right handside leaving the grey on its own?

Any help would be grate