A lot of people complain about the system not being "painless", but if you can read the instructions and know how to complete a circuit properly, then you will be all set.
It does NOT include everything you will need. You will need to supply your own grounds, you will need several extra connectors, and you will want a good set of wire-strippers and a good crimping tool (don't bother buying the cheap ones).
I installed the Painless full-chassis harness in my '73 dart and everything works as desired. It wasn't plug-n-play, but it was easy enough to do when you just take it one section at a time. The wires are all labeled and it is fairly easy to get everything in the general area where it belongs. The only issues not addressed in the Painless instructions are the headlight switch, wiper switch, and HVAC circuits. A member here [AbodyJoe] has drawn up some wiring schematics for some of those circuits which helped me out a lot.
The trick is to be patient and not rush the project. Lay everything out exactly where it needs to go, temporarily hook it up, test it, and then perform the final crimping and placement. This will save you hours of chasing your own tail.
Good luck, and remember, BE PATIENT! lol
-Mike
