Ford E8TZ-7A039-J Transmission Extension Housing

The Borg Warner 13-56 Electronic Shift system has components like an electronic control module, 4WD switch, wire harness, neutral safety switch, speed sensor, shift motor, front drive gear clutch, shift cam, and a transfer case. When you press the switch, the module looks at the sensors to make sure the vehicle is in 2WD mode and within the speed limit. If so, the module activates the clutch to synchronize the drive lines and the motor rotates the shift drum to engage 4WD. After the shift, the module verifies the mode and lights up the indicator. For 4WD low, the module ensures the vehicle is stationary and neutral before engaging the shift motor.