RE: Security system
The concept is similiar to the rental cars Alamo would like me drive into Mexico except those had edge connectors instead of a circular plug.
They work well since you cannot hot wire it and breaking the steering lock is useless.
__________________
For I know the plans I have for you," declares the LORD, "plans to prosper you and not to harm you, plans to give you hope and a future. Then you will call upon me and come and pray to me, and I will listen to you. You will seek me and find me when you seek me with all your heart.