[BobbyK]

My suggestion is go slow,take your time and pay attention to what your doing.

Don't rip out all the wiring at once.The wiring in your truck is in sections...do one section at a time.
For example,the harness that feeds your headlights, battery and alt. are one separate harness.Take the old one out noting attachment points and wire routing then install the new stuff.
I know the painless wiring is all labeled(each wire I mean) so you won't get too screwed up installing it.

Also,if your kit came with crimp-on termianls I'd suggest cutting off the plastic insulation on those terminals and crimping then soldering the terminal ends on.Then cover those terminals with heat shrink tubing.
Like this,crimp 1st


Then solder and cover with heat shrink.




If you get stuck along the way we're always here to help.