It does allow you to clean up the wiring, reduce junctions, relocate components, and move things out of the headlight bucket. There are a few components it eliminates, and it can be far more simple if you plan it out.
The other possible benefit is to correct/undo any prior owner wire harness hacks with all new fresh clean wiring. It does not alter your charging system, but it can eliminate any possible voltage loss due to corrosion or poor connections.
As for builds documenting the install of them, with the recent change in Photobucket, many build threads are image whacked suddenly. But there's many members here who can help you if you need it.