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As usual it wasn’t a straight path to get there, but it is what it is.
I ended up rewiring the battery with some nice leftover wiring supplies from ProwireUSA (if you know, you know), which really just made me want to rewire everything… but I’m going to ignore that itch.
Next up I need to do some work on the brakes, but after that I might just try driving this somewhere other than up and down the driveway.