You will receive a complete installation kit when purchasing this Toyota Tundra security alarm for your vehicle so you will have all the necessary components to finish the installation process. Give your vehicle the ultimate protection with this factory Toyota Tundra alarm system you can't get better protection unless you chained your vehicle to a backyard tree and put a gorilla in the cab. Factory quality is important when purchasing any Toyota Tundra security system for your vehicle so that you can be assured the connections will be correct and the system will have proper operation. Your new factory Toyota Tundra security system is designed and engineered for a perfect fit, from the connections to the mounting process to the overall operation you won't be disappointed.