How do you disable alarm in Mercedes-benz 300E 1986?

There is a panel in front of the front passenger's floor almost at right angles with the floor. Remove the screw holding the panel in place. Remove the panel. There is a rectangular (5 3/4" x 3 1/4") control unit held down with two nuts. This control unit has two connections. One controls the blinking lights and horn and the other the timer for the blinking lights and horn. You will need to unscrew the two nuts, pull up the control unit away from the floor, and unplug both connections.