84 Dodge Pickup Brake Lights Will Not Brighten on 1990 Dodge D150

When i turn on my headlights my tail lights will come on but when i step on the brake....Nothing. What can i do...ive Replaced the bulbs and every single fuse.... Help please..

2 answers
How about the stop light switch located on the upper back of your brake pedal http://partimages.genpt.com/largeimages/101193.jpg But there are 2 available one with cruise and one without $10 to $30 depending on cruise control
i had the same poblem there is a short in the wire goin to the light and u are gona have to bypass or rig up somthin to go around the short.