In the Tow Vehicle mode, the Magi-Box takes the place of the trailer - think of it as a miniature trailer in fact!

You can operate all of the tow vehicle controls from the cab with the Magi-Box in your hand acting as a mini-trailer. The right, left, backup, and clearance lights show on the Magi-Box as they would on a real trailer. Also you can adjust the brake controller and see the result on the Magi-Box!

In the Trailer Mode, the Magi-Box simulates a Tow Vehicle to operate the various circuits. It uses the trailer battery for it's power source, so a charged battery must be installed in the trailer. This allows you to activate the individual circuits when you need to do work on them. The built in circuit breaker guards the circuits from shorting.