Strange, I could have sworn that I've seen that light self test before. Oh well guess I was wrong... Thanks guys. Rog I'll give that a shot and see what comes up. Then I'll be back Joe, thanks for the schematic! Bill thanks for the heads up on SS switch.

-Robb

 

On the sensor itself.
As stated before. It has contacts (probes) in the filter housing.
The water itself is the conductor. #2 fuel has a higher resistance than water.

Bill