The foglights work, but at normal beam (don't know what it's called) the headlamp won't work. Okay that sounds confusing, the left section of the headlamp is for fullbeam and the rightside for normal beam (argh). Fullbeam and signal lights work but the other won't. The signal lights and the fullbeam lights are apart of the headlight. So what could be wrong with it? I've changed the bulb, no change.