Pull the existing harness & lay out on floor next to the jeep just like it goes in the jeep. Do not throw away anything you remove until you are done. This will give you a visual reference as you install the new one. Oh & do not throw anything away until the jeep is done. Did i say this before?
Used one of their Chevy pickup truck kits to wire up our 41 Ford fire truck and it worked great. I ended up removing circuits for things like cruise control and an electric fuel pump to help make it cleaner. Hi beams/low beams work great, all the accessories work now, and everything is properly fused. Like @gunbelt said, lay it out and plan it out. The last pic is a sample of what I started with.
It's frustrating at times, but you'll be very proud once it's complete.
Read the directions...twice ... before you touch a crimp or snip.
Work slow and methodically.
Finish each section before moving to another part.
Maintain work area organization and cleanliness.