What do I need and what do I don’t!

Back to your question. I would use and I have used just a generic speed master 20 circuit wiring kit. Maybe like a 150 bucks. Or forty percent off unblack friday...
I find the kits that try to use bolt connectors like the factory. Have just another place for things to go wrong... I prefer a true hot rod kit that Eliminates the bulkhead connector and runs directly to the connections like ford did...
It's basically a fuse box with all the wires. And what I did was cleaned and reused my end connections and bought the solder filled butt connectors and the heat gun.
From Amazon...
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My favorite tool, what's a 10 AM power supply? Use as if it was the battery or even reverse hook it up. So I could make everything work before I had everything completely connected. That way you're not putting the full amprage of the battery and burning wires.

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