My 1999 F250 Super Duty, Has now low beam. It was coming on by going in and out of high beam/low beam, or by switch the headlamp switch on and off several times. Now it will not come on at all. Do I need a new light switch?

 

Sounds like the multi function switch is failing.. If the headlamp switch was bad, and you lost power distribution through/out ofthe H/L switch, youwouldn't have any high beam function either when selected with the multi function switch.. The Low beams are 'fused' in thepower distribution box as well, but since the low beam function was intermittent and both L/R lampsweren't lightingpoints to the multi function....