99 Cavalier DRL/highbeam problems

Ok, My wife came home yesterday saying the daytime running lights (DRL) indicator on the dash was flashing.  I did some research, and found that it meant possibly a burnt out highbeam lamp, or a bad DRL relay.  I got a new lamp.  No dice.  Got a new relay.  No dice.  So what does work?  Well, the daytime running lights will not come on, and the driver's side highbeam will also not come on.  The lowbeams work fine.  All fuses are good.  When I turn on the highbeam switch, there is 11.87 volts at the plug for the highbeam that does not work.  There is 12.15 volts at the side that DOES work.  I swapped lamps, and its still the same.  I just cannot get the dirver's side highbeam to work, nor the drl's.  Has anyone has this problem before?  Am I missing some diode or another relay somewhere?  I assume there is some other relay, because both drl's don't work, where I can still get the passenger side highbeam to work.  I checked power at the relay sockets too, and it seems ok, although I am a little confused as to how it actually works.  Can someone please enlighten me on this situation?  I appreciate your time, and thank you in advance.

Joe

The normal headlights work, and I changed the bulb but no luck.  Even if I take the workin lamp from the side that does work and put it in the side that does not work, no luck.  Its almost like when the socket has a lightbulb in it, it malfunctions, but has voltage when there is NO bulb in it.  The lowbeams and highbeams are seperate bulbs, so there is only 2 wires going to it.  From what I gather, the drl relay puts the highbeams in series to reduce the output, and maybe there is something damaged between the 2 lamps.  I tried all of the obvious stuff, like fuses, relays, bulbs, and such.  There must be something wrong other then those things.  Hopefully, someone out there knows what might be going on.  I didn't think there was any diodes or other relays involved, but maybe there is.  Anybody have any ideas??

Joe

Don't have very much time, but thought this may help you... i had a 99 sunfire that came in with only one headlight working and when you remove the ds headlight lens, follow the harness back to where the wires split off to the ps lens and you will find when you peel back the tape/loom a corroded wiring connection that usually will cause a voltage drop. repair corroded connections; solder don't use butt connectors, and you should be ok. hope this helps