Where is all the wiring & How do I make my engine bay look like this?

I wish I had taken some better pictures before I sold the car, but this is the engine compartment of my Duster. I welded closed 158 holes, ran the lighting wiring in a conduit in the driver's side wheel well and got rid of the bulkhead. There was a single wire for the alternator, one for the temp sender, two for the distributor, one for the nitrous and four for the wipers. All other components were under the dash.