Location of 40 amp fuse on HWH 310 Leveling System

I realize that the subject of nonfunctioning levelers has been addressed previously. However, during troubleshooting of my nonfunctioning levelers I realize I cannot locate a fuse that may be the source of my problem. Can anyone help me locate the 40 amp fuse on the (black) 6100 wire? 2003 Itasca Suncruiser IFG33V Workhorse Chassis with HWH 310 leveling system.

Gary