Electrical question: 2 fuses operate together in parallel?

Good suggestion Doug - we will look into that!

The trailer is not accessible at this time so I don't know how many wires are connected, I'll have to find out or get to trailer one of these days. (it's offsite). If my memory serves me correctly, there is only one wire to each fuse which is why we are concerned that they must be crossed or connected somewhere else? :h Wouldn't that be a bad design?