Drag the tiles by clicking the mouse. You must rearrange the tiles to light up all the color coded connections. Keep track of which tiles you think are in their correct positions by SHIFT-clicking on them.
so, you all know that the left side only has 1 real option, and since there's only 1 upward facing single line blue peice, that bit pretty much resolves the whole left side. the kicker is that 1 extra red > shaped peice. THAT goes in the bottom right as far right as you can get it, theres like a diamond shaped area. it's by no means easy from this point, but it's a start. also, shift click. it helps.