repowering 2006 228 with 2022 Yami F225XB i have 3 plugs in boat wiring to engine big black plug , plugged in . Another plug with 2 wires plugged in . I Have singe red wire and can find a pulg for it on new motor
I may have a wiring diagram but need more info.repowering 2006 228 with 2022 Yami F225XB i have 3 plugs in boat wiring to engine big black plug , plugged in . Another plug with 2 wires plugged in . I Have singe red wire and can find a pulg for it on new motor
OP states that the unknown wire is in the harness from the boat and not a wire from the motor so I doubt it is alt charge lead.Most likely your alternate charging lead which was available on that year motor. Plugs into the fuse box and provides a secondary charging lead for a battery. If you follow it it should connect to the positive post of a battery switch or a battery. If you can see 12 V on the loose end with the battery switch on or if it’s connected directly to the battery then it’s most likely what it is.