The other two turnouts were from the main to the storage track and from the storage track to the east leg of the wye. Here is an overall view of Surf with the helix at the top and Carpinteria on the lower level below the tracks at Surf.
In addition to the trackage, I also installed an auto-reverser so that engines can move across the area of the wye without polarity issues. The auto-reverser is a DCC Specialties PSX-AR. It was quite easy to install. It has the capability to run a tortoise switch machine so I might attach it to the tortoise I expect to install on the leg toward Lompoc. Here is a photo showing the Lompoc leg of the wye disappearing through the thin wall with the auto-reverser installed underneath the east leg.