on my 1999 500sl when turn on right signal back works, right front doesnt also blinker speed is very fast. left signal works fine. if headlights are turned off. when headlights turn on the left turn signal comes on in the dash even if turn handle is off. if you turn left indicator on the light barely flickers on and off. mostly just stays on with slight dimming. hers the strange part. all indicators work fine with hazzard light switch on. even though left turn indicator stay as on. any help? totallyy confused.