Wiring Harness

Hey everyone,

So the car i am working on at the moment has a painless wiring harness in it. Sadly the previous owners did a horrible job and ruined the harness. I have no idea what they did and I am just going to pull it out. They for some reason spliced onto the harness and did a bunch of stuff, it is a nightmare.

Now the question is that I am getting rid of the radio and a couple other components in the car. What would you suggest for a wiring harness? I plan to upgrade ignition and add electrical fan and water pump.