I use the enertia switch out of a 2000 and up Ford. the junkyards are full of them, just look in the trunk.
Enertia switches must be wired into the control side of the relay. They are not rated to handle pump current.
That resembles the Ranger switch. I almost mentioned them. Since you've evidently seen these "in native" how do you see them mounted? The Rangers are mounted to the firewall, just like in the photo, button "up" and connector down, vertically.