The door relay operates as a
double pole, double throw switch.
It contains alternate sets of points
which change the direction of
current flow in the field coils.
The motor, assembled to the
window regulator mechanism,
may be operated either clock-
wise or counterclockwise.
The control switches are of the
single pole, double throw type
with a center "off" position.
These switches energize the
points in the relay to operate the
windows up or down and stop
them in any desired position.
