I would say that the wires and the rest of the accessories were added while the block was still wet. Seeing many original cars over the passed thirty years, i have seen this many times. Also paint on the valve covers after they removed the mask after applying the paint. The paint was still wet and would leave paint marks like strings across the valve covers. Valve covers like hemi covers, not painted ones. Watching your progress, can't wait to see this competed.....