'95 Headlight Electrical Gremlin NEED HELP!

Here is the story ...

1. Couple Months ago lost low beams ... ran with high beam ...
2. Last Week lost low beams as well ...
A. when head light switch is pulled all lights but head lights come on
B. If I pull back on turn signal switch (like to flash) lights do come on
C. If not running and i switch back and forth between High and Low (not sure if when on low or when on high) I get a buzzing sound
coming head light switch.

What I have done ...
1. Checked all bulbs
2. Checked Fuses Under Dash
3. Replaced relays under hood near Air box
4. Cleaned connections @ relays and Harness in engine bay
5. Cleaned connections @ headlights


still lost.....

any help?

tear it out and buy a new harness

Start at the lights and start looking for juice. Follow your harness back to the switch and see where the power is or isn't.

change the switch?