My 04 Cig has 3 Bilge Pumps. Two Mains One Scupper. How does the Scupper Pump activate. We placed pump switchs in up and down positions. Activated the high water sensors. Main pumps worked great. No scupper

The scupper works on our rig when you turn the right side "Bilge Pump" switch up on our rig.

What the heck is a scupper?

It's screwed to the bulkhead ahead of the motors and the water pick-up hose goes to the bottom of the bilge right by the plugs.
Makes for a nice and dry bildge to show your engines. Or engine if one happens to have "dun blowed-up"...

LOL, you musta been "justa gitin it" when it happened. (My uncle said that to me last weekend)

Correct it should work when the starboard pump is turned on, however just an f.y.i, both Cigarette and Depco, the warranty company behind the pumps, says they can't keep them working. Most owners seem to give up, appears the intended use was as a "live well" pump, and in the bilge they indicated it could be dirt etc. that causes the problem .... in any case, I have been through 4 already ... still counting, even put a quick disconnect on mine, guess I want a dry bilge. They do have 3-5 year warranties though.

I just replaced mine with a pump I got from Boat US. Bought the extended warrentee for 25 bucks. (3 yrs)They didnt have an original so I boat what I thought would work. About 200 bucks

Dan