Front Window -- Right
When the operator selects window DOWN operation power is supplied on the F81 circuit through the switch to circuit Q12. Circuit Q12 goes from the switch to the power window motor. Ground for the motor is supplied on the Q22 circuit back to the switch. A bus bar, internal to the switch, connects the Q22 circuit to the Z1 circuit.For window UP operation the circuits are reversed. Circuit Q22 is the feed and circuit Q12 is the ground.