The truck is a 2002 double cab 4x4 limited with power windows and locks. My truck does not have keyless entry. I want to add the system that came from the factory. Also i wanted to know if the system was there but just was not operating because not programmed. I have the sticker and it does not show keyless entry at all. Where would the keyless entry system be located? I have searched everywhere and can not find an answer.