I'm a yachtie, I live on my boat and sail. In heavy seas the bilge has water in it (always) and the water running back and fourth sets up a wave that runs from front to back, everytime it passes the "bilge pump switch" the pump starts, all boats have this problem. It's only momentary, and the pump stops again, this happens twice with each wave, once when the bow comes up and the water in the bilge runs back, and again when the bow goes down. What I need is a timer that will delay the start, until the pump has had a contact from the switch for 4 or 5 seconds, that would eliminate the momentary spikes from the switch in heavy seas. the second half of the problem is, the pump should run a little longer than the stop point of the switch, the bilge never really gets pumped out because the switch goes open when there's still about an inch of water in the bilge. So, what I'm looking for is a timer that delays the start to get rid of the momentary hits and then runs for an adjustable amount of time after the switch says stop. I really think a guy could get rich with a "smart bilge switch", why don't you develop it and I'll split the millions with you... All boats need them, I've known it for a long time and think I know how to fix it, just haven't taken the time. I've worked on heavy equipment with start stop timers, but they were pretty complicated, and I think it can be done pretty easily. Needs to be 12v, I'm going to pull up a relay to feed the 8 amps the pump needs. If one is sailing in even choppy seas and you have some way of monitoring your pump, you'll find out how often it runs for just a second and then goes off. Years ago I wired a led in tandem with the pump so I'd know when the pump was running and sometimes in heavy seas, I just go down and shut it off which really isnt a very good solution. Its hard on the switch and the pump to cycle on and off constantly like that. hope you can help.