Are those connectors still available? I have the same motor and have never tried the electric start, just pull it. Mine has the dreaded northern crack in the L/U I patched it with marine-tex so I have not painted it yet, I hope to come across a new lower before painting. I hope mine comes out even close to yours.
A few years back, I found a wiring harness for a 59 Fast Twin. I was shopping on eBay for something else, and there was an item and in the description it said that the seller was retiring and closing his marine dealership. I inquired if he had a harness. For $125.00 he sent me the harness (brand new never used) and the ignition switch and kill switch for a dash mounting.
That is one sweet looking little motor HT.Congrats on the effort and the result.I'm working on a 59 right now but mine is the ugly square cowl version,I don't think it'll look much like yours when I'm done.
Geoff69a1