1990 LeBaron - High beam stuck on
 

Pretty straight forward, the title pretty much says it. When I press the button for headlights, the headlights DO come on, but they are always paired with the high beams.

What we've tried:
-replacing fuses for the two lows.
-replacing the switch for high beams.

Then after the high beam switch was replaced, the left blinker and left brake light stopped working...

Yeah problem after problem.
Anyone know what can be done to help?