Hi this is my first post, I got this bike not running from a farmer 550 Fi 2010 I think the vin is rusted

The wires on the starter were disconnected we have now put the positive from the battery on the top of the starter there seems to be another black wire there and a smaller black wire with a blade plug. at the moment when we turn it over by shorting the solenoid the smaller black wire is burning in the loom all the way to the front dash. I wonder if someone could take a pic or instruct me where the two black wires near the starter go if I put them both on the starter it slows down the cranking and heats the smaller black wire with the blade connection

any help would be good we have looked at the manual but i’m not that good with diagrams