Left Window Operation

CIRCUIT 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 the Z8 circuit. The Z8 circuit goes to its grounding point.

When window UP operation is selected, the power and ground circuits are reversed. Circuit Q11 is the feed and circuit Q21 is the ground.