Honda Outboards BF40A/BF50A Service Manual, Page 357Get this manual
BF40A-BF50A 4) Set the trim angle sensor wire connectors on the connector holder5) Set the COl unit case in the place and install the mm plain washers and 25 mm flange bolts, and tighten the bolts securely6) Install the fuse holder bracket with the 28 mm flange bolt, then install the fuse holder