Headlights only work on high beam!

Have a 84 325e, and the head lights only work on high beam. Whem on low beam they all go out. Any suggestions? For now, I pulled the high beam light sockets off, and run this way. Now my warning triangle with ! point flashes when my lights are on. Thanks ...

Low beam relay K4 is bad.

http://members.roadfly.com/kcroncarter/bmwetm135.jpg

http://members.roadfly.com/kcroncarter/bmwetm136.jpg

Electric diagrams a big help! thanks a bunch. Mark.