HUD Position Control

The Head-Up Display adjuster motor is connected to the Head-Up Display (HUD) control switch on CKT 621 (YEL) and CKT 620 (BRN). Both circuits are normally grounded within the switch. Pressing the UP or DN button on the switch connects one of the motor circuits CKT 620 or CKT 621 to ignition voltage, causing the motor to run and move the HUD display up or down.