For 1987, the four-wheel-drive (4WD) system for the Civic wagon was revised. "Real Time" 4WD automatically channeled power to the wheels that had optimum grip and did away with the driver having to decide (and then move a lever) if four-wheel drive was needed.
One little mistake, there was never a lever to engage 4WD. It was a push button before the change to the auto system.