I'd just stick to the manual...
Fuses and circuit protection
There are 3 levels of power protection in the autopilot system.
and associated cables
are initially protected by the
sensing and stall condition detection within the ACU
. A second level of protection is provided
to these parts
and the ACU components by the unit's main
power fuse. Protection for the entire autopilot system and its
wiring back to the main power distribution panel is provided by
your vesselís circuit breaker / fuse.
Power supply circuit protection
Protect the power supply for the Evolution system at the
distribution board with a fuse or circuit breaker that is suitable for
the ACU. For guidance, refer to main power fuse rating stated on
the ACU connector panel. If in doubt, consult your local dealer.
The ACU uses standard automotive blade fuses. Spare fuses
are located on the underside of the removable cover.