That sounds like a ground problem. The brown wires need a good local ground. there are a number of metal screws and bolts near the lights where you can land a ground.
Try this first: get a long jumper cable (test wire with alligator clips) and attach one end to your brown wires and the other end to the big star ground just above the ecu box. Now if the CCFLs do not light when the DRLs are on, then you haven't wired the +side correctly.
I'm betting it is poor ground...