The answer depends on several factors. You cannot use lights at night hunting in any areas where the general deer season is open. Fur-bearing mammals and nongame mammals can be taken down using light from a vehicle, considering that the vehicle’s motor is turned off. For regulations on the use of lights, please check the California Mammal Hunting Regulations booklet (CCR Title 14, section 264 on page 18 and Fish and Game Code, section 2005 on page 20). You may use rimfire, centerfire, or shotgun and possess non lead ammunition in the condor zone and while hunting on all state-owned lands.