My brake lights don't work.My fuses are all good.....2005 ford f150 truck???

Look above your brake pedal and you will see your brake switch up along your brake pedal arm. It will either be between the brake arm and the firewall so when you brake it pushes the switch in. Or it will be between the dash and the brake arm so when you brake it pulls the switch out. Most likely this switch needs to be replaced

Could be the brake pedal position switch ( as super_guy posted ) or it could be the MFS ( multi function switch ). The brake lamps route though the MFS ( this is how the 1 bulb works for the stop / turn functions ).

The Brake pedal position ( BPP ) switch should have a yellow c-clip cover on it, with 4 wires from it.
2 wires are for the shift interlock ( which seems that side is OK, else you would only be able to get the truck out of park, by moving it to neutral prior to starting ).
The test for the BPP switch is to jumper the light green w/ red stripe wire to the light green wire ( this is what the switch closes to make the brake lamps work ) in the connector after removing from the BPP switch.
The light green w/ red stripe wire is from Fuse #2, hot at all times