Where do I refill the windshield wiper fluid in 1989 Woldsburg Vanagon?

There seems to be a mistake in your question. The Volkswagen Vanagon was produced between 1980 and 1991, not 1989. I can assist you with the location of the windshield wiper fluid reservoir in the Vanagon manufactured during this time period:

1980-1991 Volkswagen Vanagon:

1. Open the hood of your Vanagon.

2. Locate the windshield wiper fluid reservoir. It is a translucent plastic container with a blue or black cap, typically located on the driver's side, near the firewall.

3. Unscrew the cap of the reservoir.

4. Add windshield wiper fluid to the reservoir until it reaches the "Full" or "Max" mark.

5. Replace the cap of the reservoir.