Welcome, stevezh. Here's a link to Google Maps of the spot, and the same spot using CalTopo. GPS coordinates: 36.56727,-118.26766

If you're not descending after dusk, you will be fine. Also, the last time I was there, rangers have stacked some large rocks there where you need to make the turn, so you have to climb up and over them to actually miss the turn and mistakenly head east.