Best wiring harness kits?

[cgster]

My 72 C10 that I purchased not to long ago had an old alarm system, radio system and steering column from a newer model truck, so its got wires running everywhere that I have no clue about, and im far from being electrically inclined with this stuff, so I just want to rip this old wiring out and start over since most of the lights only work have the time. Anyway, do most wiring kits come with all the wiring (steering, ignition, all lights etc..) or are some limited? Also, what is the best kit for the less electrically inclined? Thanks.