Next on this drivers door it is time to check where I want the main control unit. As you can see this unit contains a switch for each door, it also has an "on/off" style switch which allows you to enable and disable the switches on the other doors. This will stop your kids from using and playing with the switches and windows. On my car I left the other switches hidden and just use the main control unit but on this car I want the option of people being able to use the units.