I called the DFG for central CA and here is what they said regarding hunting pig: No night hunting since they are considered a game animal. I didn't even ask about night-vision since I can't get them at night
(c) It is unlawful to use or possess at any time any infrared or similar light used in connection with an electronic viewing device or any night vision equipment, optical devices, including, but not limited to, binoculars or scopes, that use light-amplifying circuits that are electrical or battery powered, to assist in the taking of birds, mammals,amphibians, or fish.
RED: Since it is emphasizing the usage of an IR light being unlawful, it seems like you can use night-vision as long as you aren't using an IR light with it.
BLUE: This is the part that is confusing. Is it a separate clause or is it still referring to the IR light? To me it looks like the subject of the sentence is the IR light, and the rest of the sentence (devices) relate to the usage of the IR light.