The stock "aero" headlamps on Gen-2 Minivans use
9004 halogen bulbs. Frankly, they suck. Big time.
The plastic headlight lenses dull with age, but even when new
they have very poor low and high beam pattern definition. Sure you can add
higher wattage 9004 bulbs and even install dedicated high/low relays &
harnesses, but the net results are still fairly unsatisfactory.
Assisting the headlights are Hella
supplemental fog and driving lights that more than make up for the Gen-2's
lousy USA-spec headlights.