If you get under the car and look up underneath the manifolds on the passenger side, you will probably see the block heater. It is about 1 1/2" with two small screw terminals for the cable. Most, if not all cars had the block heater from the factory, but the cable was not installed. If the heater is in place, you can get a cable, they are inexpensive. Then connect the electrical terminals and carefully route it to a point at the bottom, passenger side of the grill opening. In the winter time, leave the plug hanging out a little past the grill. In the summer tuck it back out of the way.

Good luck,