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Old 15-05-2020, 13:51   #1
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Need help wiring a bilge pump to a 7-pin switch

Hi everyone,
I have tried to Google the hell out of this, and I just can't find anything helpful. I have a 7 pin switch on the dash running the bilge pump. When you press the switch up it is supposed to turn the bilge pump on. When you press the switch down it is supposed to activate the pump when the float switch is raised. I can get it to work to turn the bilge pump on, but I can't get it to activate the pump to allow the float switch to turn the pump on. I'm sure this is an easy question for many of you. I have included a simple diagram. Can anyone draw on this diagram to show where the wires go? That would be helpful. Thanks in advance.
Joel
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Old 16-05-2020, 10:42   #2
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Re: Need help wiring a bilge pump to a 7-pin switch

Are you sure the float switch is working?

This is my stab at it:

BAT+ to Switch #5.
Switch #4 (Down) -> Float Switch (Line)
Float Switch (Load) -> Bilge Pos
Switch #6 (up) -> Bilge Pos

And of course, Bat Neg to Bilge Neg.

Ignoring fusing, bilge lights, etc.
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Old 16-05-2020, 11:03   #3
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Re: Need help wiring a bilge pump to a 7-pin switch

Quote:
Originally Posted by tek-noid View Post
Are you sure the float switch is working?

This is my stab at it:

BAT+ to Switch #5.
Switch #4 (Down) -> Float Switch (Line)
Float Switch (Load) -> Bilge Pos
Switch #6 (up) -> Bilge Pos

And of course, Bat Neg to Bilge Neg.

Ignoring fusing, bilge lights, etc.

That seems right to me too. The Neg. (Terminal-7) on the switch is likely because it's a lighted switch.
Looks like a Double Pole - Double Through (DPDT) lighted switch. You'd only need to use one side of it for your application. Terminals 1,2, and 3 would not be used; unless the switch needs power (+, Pos) on terminal-2 to make the light work in the switch. There should be a circuit breaker or fuse somewhere in the circuit between the battery and terminal-5 of the switch.
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Old 16-05-2020, 19:56   #4
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Re: Need help wiring a bilge pump to a 7-pin switch

tek-noic/neosec,

Thanks. This worked! Appreciate the quick (and accurate) replies. You guys are great!
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