2500 4x4 Pickup V8-318 5.2L Magnum (1995)
Power Window Switch: Description and Operation
Master Window Switch
Left Window Operation
When the window switch is moved to the window DOWN position, voltage is supplied on the F21 circuit through the closed contacts in the switch to the
Q21 circuit. The Q21 circuit connects from the switch to the left front window motor. Grounding is provided on circuit Q11 from the motor back to the
switch. The ground is passed through the switch to ground on the Z3 circuit.
When window UP operation is selected, the power and ground circuits are reversed. Circuit Q11 is the feed and circuit Q21 is the ground.
Right Window Operation
When the window switch is moved to the window DOWN position, voltage is supplied on the F21 circuit through the closed contacts in the switch to the
Q26 circuit. The Q26 circuit connects from the master switch to the right window switch. A bus bar internal to the right switch passes the voltage through
the switch to circuit Q22. Circuit Q22 connects from the switch to the right window motor. Grounding is provided on circuit Q12 from the motor back to
the right switch.
The ground is passed through the switch on a bus bar to circuit Q16. Circuit Q16 then connects to the master switch. The ground is passed through the
switch to ground on the Z3 circuit.
When window UP operation is selected, the power and ground circuits are reversed. Circuits Q16 and Q12 are the feeds and circuits Q22 and Q26 are
the grounds.
