Look on the electrical item for a built in fuse holder. Or, check the power cables for an in-line fuse. If you suspect the fuse to be blown use a digital multi meter continuity tester to confirm that the fuse is blown. Replace the fuse and test the item to see if it works.
Remember to find out why the fuse blew in the first place.
Still a little fuzzy on your fuses? Give Captain Chris a call and we’ll take you through your boat to understand more about how things work. 772-205-1859 or send a note and we’ll schedule time aboard.