http://tinyurl.com/y93a372
The "A" beginning point on the googlemaps is the intersection of Main Street in Hesperia, and interstate 15. The "B" end point is Bowen Ranch. They charge $5 or $10 (cash) per person for parking on their land, and they give you a map to the springs from there. You don't even really need the map, though, as the trail is fairly obvious.