Tiller pilot wireing

I'm hooking up a new tiller pilot and am wondering about a preferred wiring diagram.
Diagram one would be with the ground wire going to a dus bar at the switch panel and then to the negative terminal. The red wire would go to an in line fuse then to switch then a bus bar all at the switch panel then to the positive terminal.
The second diagram would be that the ground wire would run to a bus bar at the switch panel and then to the negative terminal. The red wire would go to a bus bar then to an in line fuse then to a switch then to the positive terminal.
The difference between the two is the placement of the new bus bar. Either before or after the switch and the fuse.
Also, does it make any difference if the positive or negative line is switched and fused?

 

The positive is usually fused on a negative ground system. If the negative was fused and the fused burned, there would still be a hot wire that could short out and burn.

 

This planet has a myriad of languages and local standards for size, weight, distance etc., but the one thing we all agreed upon is not to put fuses in the negative circuit.