At 12:21 PM 5/29/2012, neil n wrote:
>went out after a few seconds
>stayed on for quite a while.
>
>Last night it did the latter, staying on for some time. Restarted van,
>light went off. During further inspection of ground wiring condition

Classic symptoms of a gauge with bad internal cap.  To verify, remove
the controller (painted 42/43, position 8 in the fuse/relay
panel).  Any subsequent misbehavior is down to the gauge.  You can
replace the cap or get someone else to.

Yrs,
d