LED Light Glowing when off
LEDs need very little power (that is the point after all).  In fact, if you have a live cable running next to a cable feeding the light, then there can be enough inductive coupling between the cables to cause a glow.

The fact that you say "I tried to seperate the 'main line' as much from the lines feeding the lights and it seems to have worked for the most part." makes me think this is the explanation.