Ok Guys, it is a Rule 1100 GPH automatic/manual bilge pump. It is controlled by a computer chip as CL 240 S wrote. It pulse starts the impeller to test resistance and if it finds none it shuts down. Supposedly it can be controlled manually with a switch on the helm. I have a switch marked bilge. It is a two position rocker switch. But I think the battery has to be on and it only starts or stops the bilge running (so if it is off it will do the cycle thing). I was hoping I might be able to stop the automatic operation, but I don't think this will be possible. (The snow has kept me out of the boat as it is covered up so I can't test the theory). I think I will have to live with it like this or go to a float pump (don't know if this is such a good idea).
I went to the Stingray site and accessed the Rule owners manual. Damn if you couldn't write another manual of what they leave out (LOL)!
Funny I didn't hear it last year! I think will test as Descant suggested if it ever warms up
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