2010 242 Bilge Pump Wiring

[Randy2010242]

Hi!

I need help. I purchased an Atwood Tsunami to replace my factory installed system.

I thought after I got the old out the battle was won.

I was wrong.

The new pump has 3 wires - black, brown, and brown and white stripe.

My old system had two grey wires from the harness going to a float and a brown and black wire going to the pump.

I have a toggle button and an indicator light on the dash.

Previously when the float kicked the pump on I received and indicator light adjacent to the button and I could manually turn the pump on with the button which also turned the light on.

I can’t find the wiring combination to restore this functionality.

Please help!

[Titaniumboy]

Perhaps this schematic of the bilge pump and float switch on my 2007 240 will be useful?

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[Randy2010242]

Thanks -

Yes that is helpful and I suspect mine is wired the same. Based on this schematic and the fact the new bilge has an internal float switch, I don’t thing there is a way to illuminate my helm light when the bilge automatically comes in as I don’t have a stand alone float switch any longer.

Thanks again!

[Titaniumboy]

Here are pictures of my bilge pump/float switch connector. The top half connector pins are numbered 1 thru 4 from right to left. Notice that there is a solid brown wire at pin 2 on the top half but no wire on the corresponding pin on the bottom half connector.

Also notice that there are two wires doubled up on pin 3 in the bottom half connector.

This is the only connector on my boat where Cobalt used sealed rubber gaskets for waterproofing.

I think your bilge pump helm switch should still light up whether your bilge pump switch OR the automatic float switch turns on the bilge pump.

Hope this helps.

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