It looks like the motor
on that windlass
has three high current
terminal lug bolt posts.
On my windlass, also with three posts, one of the nuts was over tightened when the boat
was built, causing that bolt to eventually fail.
The result was that the windlass would only drive up and not drive down.
My solution was to disassemble the motor
and replace the broken bolt with one that I created by modifying a purchased part.
has remained intact for well over a decade.