At 06:23 PM 11/30/2010, mark drillock wrote:
>It is easy enough to test the gauge circuit with $1 pack of resistors
>from RadioShack. Then you will know if the cluster  or some part of it
>is the problem. I will help any owner do this testing on their own van
>if they will get the resistors and send me a photo of them holding them
>in front of their van.
>
>100 ohm, 1/2 watt
>part number 271-1108 for a 5 pack

Nominal is 35 ohms should blink the light and bring the needle to the
extreme left of the overheat zone, +/- one needle width.

265 ohms should (eventually, maybe with a tap or two) bring the
needle to the bottom of the "transition zone" again +/- one needle width.

If you have the gauge out you'll see three little lines that you can
sight along the needle to; nominal, +limit, -limit for each of the
two calibration points.

Yrs,
D