Have a 1997 Ford F150 turn signals do not work. If headlights are on turn signals don't work. If headlights are off and heats off they work. When headlights are off and I turn on heat there's a buzzing noise coming from the flasher under the drivers dash. When you turn heat on there's no blower. Heat doesn't blow out.headlights on green arrows show up on dash High beam light comes on but high beam is not on. No blower motor. Dimmer switch dosen't work when lights on. Headlights off dash light are on.

Optional Information:
1997 F150 V6

Already Tried:
Have checked all fuses. Took out flasher changed with hazard and same thing happens. No lights No heat blinkers work and hazards.Lights on no dash lights no blinkers on dash shows high beams ore on when there not and shows to solid green arrows on dash. Put heat on with lights off and get a buzzing noise through flashers.