For the dash lights, are you aware that by turning the headlight switch you can turn them off completely, have you checked that? Have you checked if the bulbs are burned out in the dash? Have you checked for blown fuses?
Does the dash light for the right turn signal come on and not blink? If it does recheck both front and rear bulbs, they are dual filament, make sure both are good. Also check the socket with a volt meter to see if you have power.
On the high beam have you checked the switch on the floor to see if it has a melted connector or any other damage?