I have an aftermarket immobilizer for sale, but i recommend not to mess with the wiring of this Hybrid Electric Vehicles, unless you have extensive knowledge of how the starting of this car will occur.
e.g. You want to prevent your car engine to be started, or electric motor as well ? I guess you including myself do not have much knowledge about these cars.
Consult me if anyone needs to install any type of immobilizer,at least what i can do is to suggest about effective installation of immobilizer for more safety.