Headlight Problems...Help Needed!!!

[corkscrew]

Ok i put in my new Euro lights and harness from LMC truck just last month. They have been working great but something odd happened. The lights turned on when every thing was off and the only way to turn them off was to disconnect the battery. so any clue what the problem might be? could it be maybe the switch got disconnected somewhere? also at first the bright lights would not work and the whole bulb would shut off. But the dims work fine. and clue to what might be wrong? thanks guys