I have a 99 Maristar with a yellow and black bilge pump, the pump is a cartridge type with a square float device. When in the Auto mode the float will not activate the pump, either by hand or when we get a little water in it. It does work when I flip the switch to on. I would get the brand of it, but it is at the lake, which is two hours away. I am trying to get the make of this so I can get the float switch and replace this weekend as it will be on a buoy for a week. Any help is appreciated

I'll be at my boat tomorrow (same boat, but '98), will try to take a look to get you what you need to order a new one.

thanks Doug

Joe, <BR>I think this is what you need. Pretty sure its a Mayfair bilge pump. Couldn't figure out exactly what the GPH was, but guessing 750. Hope this helps, good luck! <BR> <BR>Here's a link to one on the web... <BR><a href="http://www.nextag.com/MayFair-Ultima-Combo-Pumps-551504304/prices-html" target="_blank">http://www.nextag.com/MayFair-Ultima-Combo-Pumps-551504304/prices-html</a>