Wiring kits?

The money is in the different colors of wires and the schematic you get with the kit. It takes time and a meticulous mindset to map out their own electrical diagram for the entire vehicle. If you don't already have a stockpile of wires in different colors and gauges, it would cost quite a bit purchase these. I couldn't imagine troubleshooting an electrical problem with all the wires the same color and gauge from a single spool of wire. To those with the time, skill, and just love for that sort of thing; I recommend going out and finding a newer vehicle at a junk yard and cut out the longest bundles of wire you can so you can have your colors and gauges. However, I do get your point on the insane prices of some of these wiring kits. I've heard of sets costing upwards of $1k because they made just for your model/year vehicle. Aside from maybe the one at the very top of that list, they don't even take the time to measure wire...that's too much time and work. All those kits are really "universal" when they are advertised as otherwise. Me, I purchased a RF kit for about 300 on sale. To me it was worth it because I had a set amount of time to finish the project and by having all the tedious work of diagrams etc. already done for me. But there's no way I'd pay upwards of 1k for a wiring harness lol
It's one of these generic kits that I'm very much talking about also. You know you can buy different colors of wire for like just a few dollars per spool for each color? Those basic kits really just do the basic wiring and you usually have to run it all the way through to where it goes? Me personally I just took the whole dash out and everything put up on a bench so I can just stand there with my soldering iron and run new wires to the basic things. I'd have a hard time thinking I couldn't diagnose a problem with a wire that I soldered in to the fuse box ran and soldered an end on and plugged in? Course I ended up doing a custom deal with my own custom switches and stuff like that but putting it just back into a simple fuse box would have been just as easy, actually easier.
As far as the colored wiring schematics I just took the phone that I'm voice commanding in now and voice commanded 73 duster wiring schematics and then pushed images and bazinga! Then I went down to Office Depot and had the lady do the same thing on her computer and said can you print that out and she said no problem and I had it blown up and everything for under $2. So again it's an option for those who want to do it themselves. And of course for those who are counting numbers there's only like 27 or 29 wires that go into the engine compartment and that includes all the headlights and everything.IMG_20180107_202636.jpg IMG_20180302_110851.jpg
Don't let the spaghetti scare you! LOL