97 mustang v6 electrical problem

my brake lights, dome lights, horn, blinkers, fuel gauge, and the power locks dont work. i have the whole car basically apart traced wires all around the car checking for broken fuseable links, faulty grounds...etc but cant figure it out. Im figuring it might have something to do with either the radio relaying power or a bad keyless entry box, but i dont know why that would make the fuel gauge not work. so yea if i cant figure out this problem cars going to have to goto the bone yard lol...

Sounds like the Ignition switch is bad..