Type A or Type C Windows
Type B power window systems are common in many European cars, such as Mercedes Benz and Porsche. In the type B system, the power window wires will rest at (+)12V ignition and the switch will switch one of the wires to (-) ground to activate the window motor. The wire that switches to (-) ground determines which direction the window will move. Since the 530T monitors the state of the switch wires, the switch input polarity must be set to the (-) negative setting (see dip-switch settings). Also when testing, the UP wire is the wire that remains at (+)12V ignition while the window is moving up; the DOWN wire is the wire that remains at (+)12V ignition while the window is moving down. This can be confusing because the 530T switch input wires are not going to be con- nected to the same wires as the motor output wires. Just remember, with the 530T installed, the switches are no longer connected to the motors. They trigger the 530T to move the power windows one direction or the other.
NOTE: When wiring the 530T in a vehicle with a type B system, it is necessary to run the wires into each door to be controlled by the 530T. If not, the master (driver’s door) switch will work, but the switches in the other doors will not.
© 2000 Directed Electronics, Inc. | 2 | N530T 1/00 |
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