DIY Bilge Pump Installation – Getting Automatic Bilge Pump Operation

Got that sinking feeling? It’s time to install an automatic bilge pump! Our West Marine experts have got you covered in this video.

Amir Benbaji

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  • If you want to have automatic and manual operation, you'll need at least a two-position switch. On my boat, I have a bilge pump circuit breaker, and a second switch that selects automatic or manual operation. The manual "side" of the switch is spring loaded, so I can't leave the pump on and let it burn out. Some panel switches have three positions: Off, Auto, and On. Search for "Bilge Pump Switches" on the West Marine web site.

  • I think you're asking why the float switch only has two wires. That's because it's an on-off switch, which conducts electricity when the float rises, and opens the circuit when the float falls. There are wiring diagrams included with both the panel switches, the float switches, and the pumps.

  • my pump says automatic cartridge bilge pump, and when i hook up the wires it runs dry.. whats so automatic about that

  • Could you guys please do a video on how to select the correct sized pump for a particular application?

  • Many automatic pumps have 2 wires, making this video erroneous right out of the gate. "Experts"

  • I'm a newbie - I just bought a 1973 Tartan T30 in October. The bilge needs replacing. It previously only had a manual pump (on or off). I'd like to install an automatic bilge.

    I don't know jack about wiring (I have a feeling that's all about to change - my yard charges $180 per hour) - so how hard is it to wire up an automatic bilge pump? When answering, lets keep in mind, I'm not that hand...yet. How many hours do you reckon it'll take?

  • I’m switching from a Rule-O-Matic 2000 to the L 2200 Johnson. My issue is the wiring is a tad bit different. It would be nice if it was a little more clear on how to wire it. I’m going to give it a hip shot, but it would be nice to know the true way of doing it. Care to reiterate? I think you for your time.

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