Posted this on the battery terminal thread too, but people might not look there for accessory switch solutions.
This shows the Garmin PowerSwitch bluetooth switch and a ground bar mounted on the top of the fuse box in the engine compartment. I’d prefer another location, but couldn’t find one with all the oversized plastic and other BS under the hood. This is secure, and I left enough slack to access the fuses, but the idea bothers me. As crowded as the space under my jeep hood is, there was ample room for mounting and SPOD on its own aluminum platform… Still, this works, and it doesn’t look awful.