Hi @Skyliner33 I done it for a bit more protection. I will try and get hold of the wiring diagram that Clayton sent to my friend.Out of interest, why is that fuse needed on the PV+ input on the MPPT? I see lots of arguments about if a fuse is needed at all, and Victron has their fuse at the Panel end not near the MPPT, I can see why it is needed there, but then in most installs it would be outside the van.