Magoo, I had to pull a fuse from under the hood on my Saturn Vue. I installed a switch across the fuse terminals.
I removed the fuse, attached a wire to the hot side of the fuse terminal, installed an in-line fuse holder with a fuse rated the same as the original, ran the wire to a convenient location for the switch (on the lower edge of the dash near the driver's door), then ran the wire from the switch back to the cold side of the fuse terminal under the hood. Just make sure the wire and switch are rated to carry the current that the original fuse was rated for.
One of the RV magazines recently featured a switch/fuse assembly that could be plugged in to replace the fuse, but I can no longer find the information. As I recall, they were more expensive than my do-it-yoursef solution and you still had to open the hood to get at it.
2015 DRV Tradition 375KPS
2015 Chevy Duramax 3500HD LTZ Dually
Full-timers...Home is where we park it.
Check out our blog: Living Our Dream