My brake lights don't work when I step on the pedal. The taillights, turn signals and flashers work but the brake lights don't. The 3rd light won't work either. The fuse for the stop lamp is good. What else should I check?

 

dunno if the ram is the same but there is a switch behind the brake pedal,it may be bad or may even came alose,check that

 

I take it you replaced the fuse inside the truck. There's another one under the hood in the fuse box behind the battery.