2004 f350 super duty dually turn signals and running lights work but brake lights do not, put new brake light switch on and checked all fuses, still does not work, what next?

SOURCE: i have a 1990 f350

Check the fuse its #4 under the dash and I have the same problem right now i have narrowed it down to the left rear tail light is grounding out somewhere.

SOURCE: I have a 2002 Ford F350 Super Duty 4X4, The Turn

check turn signal arm might have short or contact problem

SOURCE: F350 SUPER DUTY,tail / brake lights turn signals

Check your Ground wire. Use a test light that is grounded and see if you have fire on any of the turn signals or running lights.