Single Stage System.  This design has four main legs.  The switched power supply in this system does not need to provide high amperage to the toggle switch.  A switched auxiliary port on the fuse panel is an excellent choice.  Run from the toggle switch, through the optional momentary switch to the #86 connection on the relay.  From the relay (connection #85), wire through an optional Hobbs switch, or directly to the full-throttle switch and then to the ground.  The switch is to be wired using the 'NO' (normally open) terminal and the 'COM' (common) terminal as shown in the diagram