The intellipower doesn't need any switches -- it simply plugs into a standard 110v plug, and then there should be leads from it to the distribution (i.e. fuse) panel and another to the trailer ground. On the left side of the photo, you can see our old original univolt, that we've kept in place to use as our fuse/distribution panel for the 12v
. The intellipower simply plugs into the socket, and the romex you see are the leads that run to the back of the old univolt to power the panel.
Here's our setup (doesn't look pretty, but it works and is easily accessible):