72 c10 wiring problem! HELP!!

[dutsuno]

recently purchased a 72 c10 longbed. v8 350 3 on the floor manual trans. replaced the plugs, points, plug wires, new battery, fuel pump, ignition switch. it ran good and strong 4 a month, but decided not to run nemore. the problem i am having is that the truck is not getting power (electricity). the headlights dont go on. and it wont turn over. but it used to start up right away. when i replaced the ignition switch, the red wire was hanging on by 4-5 copper threads and not the whole wire. i noticed tht my key was prety warm sumtimes when i turned the truck off after drivin it. and sometimes when i turned it off, it would sound like it still wanted to run, alomst like the sound when u run out of gas. i need some help and it would b greatly appreciated!!!