My 03 Forester left turn signal works fine until I turn the headlights on. Than the green arrow on the dash lights up and stays lite and also the front and rear turn lights stay lite but don't blink. Than when I turn off the head lights the turn signal goes back to working the way it should always. Are there any good ideas of what could be causing this. My car is US specs but I'am stationed in Germany and the car is due for inspection and I hate to have the Germans work on it because they think Americans all have money and they want to get as much out of us as possible. Thanks for any help.