The first thing that happened was my brake light came on . I topped off the fluid and it went off. Over the next week and a half it would come on and go off increasing in frequency and in how long it stayed on until remaining on permanently. Next the truck shut off while driving with no warning. It would crank right back up but if I let off gas it would die. By the time I got home it would no longer crank. I have replaced the fuel pump, cam sensor, crank sensor, spark plugs, fuel pump relay, ignition switch, ran a new power wire to the fuel pump. I am getting 12 v at fuel pump relay. But when the key is in on position there is a continuous ticking at the tipm and the fuel pump never kicks on.

 

You've thrown all these parts. Have you put a voltmeter on your battery/alternator checks?