Hostess is 100% correct. I’ve traveled that route every time I visit Pahrump, since it’s out of the way to drive to Las Vegas and then backtrack to Pahrump on NV-160-W.
You can use whatever method to get to I15-N and exit at Baker, California. CA-127-N is the two-lane highway on the west side of the Mad Greek Restaurant. Follow CA-127-N and turn right or east just before you reach Shoshone California on CA-178-E which changes to NV-372-E when crossing the Nevada Stateline. Continue on NV-372-E until it intersects NV-160. Turn right on NV-160-E, and then turn right again on Homestead Road proceeding until it dead ends at Sheri’s Ranch.