i have an 03 f350 and my headlights do not work but yet all the fuses are good pls help me.

 

i have replaced the switch too

 

Make sure the fuse F2.7/30amp in the CJB is good.. It supplies power distribution to the headlight switch/multi function switch.. Power feed 'out' of the H/L switch into the multi function switch is the RD/YE wire.. Headlight fuses in the CJB are...F2.30 for low beam, and F2.46 & 47 for high beam... Check for both lamp functions as well as flash to pass.. Chances are it's the multi function switch if all the fuses, bulbs, groundsare good.. But check for current 'through' the headlight switch (DB/OG in, RD/YE out) down to the multi function switch on connector (RD/YE).. With the multifunction switching headlamp functions L/H, the power should jump/switch from the GY/OG (high beam), and to RD/BK for ther lows..