No head lights on 1999 BMW 323i

My headlighs do not turn on; only my high beams turn on. How can fix the problem?

Asked by for the 1999 BMW 323i
Check that the bulbs are OK, if they're good, then check that they're getting power to the bulbs and the ground circuit is OK. You'll need a wiring diagram and voltmeter/test light to troubleshoot this properly, get a diagram here: