Is there a simple way to set up checkboxes to toggle (on/off) KML layers for Google Maps v3? I\'ve come across these articles, but none of them have worked for me.
Sorry my article didn't work for you, it is a little dated.
Here is a full example of a typical Gmaps toggle assuming you are using kml files.
This is pure js so of course using jQuery you can do things a little easier. Hope this helps!