I guess I should post how I mocked this up with the aux fuse box, breaker and compressor on the rago mount. I plan to use flag terminals out of the breaker and into the fuse box. The 4 gauge wire might have a tough 90 degree bend but I think I can make it work.
Switch inside the cab or I was just going to try and find a spot in the engine bay since this is just for inflating tires. Thoughts here?