1. Locate the clock: It's typically on the dashboard, often near the radio or other controls.
2. Identify the adjustment knob: There should be a small knob or button, often on the lower right or left side of the clock's face. It might be a tiny crown-like knob, or a small push button that you may have to hold down and turn.
3. Adjust the time: Turn the knob to move the minute hand. The hour hand will move accordingly. There is no separate hour adjustment. You adjust the minutes until the correct time is reached.
If you have difficulty finding the adjustment knob, consult your owner's manual. A picture will be invaluable. If you don't have the manual, you might be able to find a digital copy online by searching "1992 Dodge B350 owner's manual." Failing that, a picture search for the dashboard of a similar year Dodge van might show you where it is.