What year van is it? All years have 4 fuses for the headlights.

If 80-85, fuses 5 and 6 are for the high-beams.  With the key on and the
headlights on and fully connected, measure the voltage at the top and
bottom of both of these fuses. You should have 12 volts or so at all 4
of these points when the high-beams are on. Do you?

If 86-91, fuses 9 and 10 are for the high-beams. These are a bit
trickier to measure in place. If the fuses have tiny holes in the
plastic at each end you can stick a pin in the holes to touch metal so
you can measure the voltage. If no tiny holes, just swap the 2 fuses and
see what happens. If still no solution, get a couple of new 10 amp fuses
with tiny holes so you can measure.

Mark

John Runberg wrote:
> Interesting, but here's the question:
>
> I'm getting 12v on the side that's not working - measured with the lamp disconneced. Connect the lamp and I get zero. Lamp is good - tested on the other side.
>
> john
>