Alternator started sparking

You can get the plastic bulkhead connectors and move all your wires over.
That way your keeping it as stock as possible, and thus easier to work on.

I would not go with a aftermarket "universal" harness. Aftermarket stock would be good

Are your saying to replicate the bulkhead connectors elsewhere? I was hoping to eliminate one of the bulkhead connectors and use marine grade heat shrink “butt” connectors and feed the wires through a hole where middle connector would be. Obliviously, I’ll feed the wires through the hole first and then connect them.

Thank you on the Universal harness advice. They look like a lot of fun though. Just kidding. What Stock aftermarket replacement would you suggest? Just in case I can’t get this thing safe and road worthy with my scab approach.