The two-speed axle electric shift system consists of the following components:
| • | A switch |
| • | A relay |
| • | A two-speed rear axle motor |
When the two-speed rear axle switch is closed (HIGH speed range), a ground is supplied to the two-speed rear axle motor shift relay. Voltage is applied to the two-speed rear axle shift motor through CKT 1469 (LT BLU). This action moves the control spring to the HIGH range position. When the load on the axle gear is relieved, the axle shifts to the HIGH speed range. The automatic switch in the motor unit moves to a position that opens the input on CKT 1469 (LT BLU) and closes the input on CKT 1468 (LT BLU).
When the two-speed switch is opened (LOW speed range), the two-speed rear axle motor shift relay is de-energized. Battery voltage is supplied through CKT 1468 (LT BLU) to the two-speed rear axle motor. This action moves the control spring to the LOW position. When the load on the axle is relieved, the axle shifts to the LOW range.
Voltage is available at all times to the two-speed rear axle motor shift relay coil and contacts, from circuit breaker #22 through CKT 415, CKT 239, or CKT 241 (PNK or BRN). When the two-speed axle switch is actuated, the switch contacts close. This action connects the ground to the coil of the two-speed rear axle motor shift relay through CKT 21, CKT 416, or CKT 1467 (GRN/BLK or GRY/BLK). The two-speed rear axle shift motor is grounded through CKT 450 (BLK) to G450.
