How do you use 4 wheel drive in 88 jeep grand wagoneer?

To engage the four-wheel drive in a 1988 Jeep Grand Wagoneer, first come to a complete stop. Shift the transfer case lever into the "4WD" position, which typically involves moving it to either "4Hi" for high-range four-wheel drive or "4Lo" for low-range. Ensure the vehicle is in neutral if you're shifting into "4Lo." Once engaged, you can drive in four-wheel drive, which enhances traction on slippery or rough terrain.