The "Jesus Valley - Beaver Pond Trail" shown as red on the map is a snowmobile trail. Your can access it at the end of Jesus Valley Road (but not going up the right hook which is a private section). Park on side near large wetland and the trail is a short distance down the old woods road.
Turn right off the woods road then after a short rise, left branch goes to Mt Major but it will be a fairly steep climb. Right branch goes northerly past the beaver pond and intersects the Boulder Loop Trail (orange). Mushy going past the beaver pond unless frozen in winter.
The Boulder Loop Trail to Major is longer than the main Mt Major Blue Trail, no as steep but still has a short fairly steep section. This would be best accessed from the Mt Major parking lot.
The easiest way up Major albeit longer is to start on the Blue Trail from the parking lot but then at 0.7 mile continue straight onto the Brook Trail (yellow). A trail description that I wrote a while ago is here:
http://belknaprangetrails.org/mt-major/blue-trail/