12V pump switch - Fiberglass RV


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Old 03-25-2013, 08:08 PM   #1
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12V pump switch

I am about to install this pump switch. The switch lights up when the pump switch is turned on. I haven't been able to wire the switch, so that the pump is turned on and the light goes on.

Here is the switch. Has anyone wired up a similar switch?
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Old 03-25-2013, 08:13 PM   #2
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one spade should be ground, one power and one spade to pump positive side
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Old 03-25-2013, 08:48 PM   #3
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...Here is my suggestion:1/ Using multi-meter @ Ohm meter scale, measure every 2 of the leads, recording the reading of ON and OFF positions to find out when SW is ON, which pair is connected. If NONE is connected (indefintely Ohm reading) --->The sw is defect and in need of NEW SW..2/ After find out which leads are connected when SW is ON, using an external 12VDC source, such as a battery charger or even a 1,5v single battery( You would see the SW is dim light when SW is ON) to see if the light is ON. If not, the light is BURNT. Just as simple as that. Hopefully it helps...
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Old 03-25-2013, 09:04 PM   #4
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one spade should be ground, one power and one spade to pump positive side
Do you mean that the ground is for the internal light? As in, power goes to one terminal, through the switch to the output terminal that goes to the pump and also goes through the internal indicator light which then uses the third terminal to ground?
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Old 03-25-2013, 09:08 PM   #5
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The two posts, one over the other, will turn on the pump. Would the single post remaining be the ground?

I've installed the switch and run the pump. With those two posts used, the light didn't come on. I know the light will work, if wired to test.

Thanks for the thoughts, no instructions to work with.
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Old 03-26-2013, 10:55 AM   #6
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Ground?

Hi,
Most likely the third spade is the ground.
If you have the input and device lugs mixed
up the lamp will light and stay lit if the
Ground/DC- is hooked up. Below is a
schematic of how the little bugger works:
GL, Larry H
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Old 03-26-2013, 11:54 AM   #7
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Quote:
Originally Posted by Hambone View Post
one spade should be ground........
Quote:
Originally Posted by Ron in BC View Post
..... indicator light which then uses the third terminal to ground?
Quote:
Originally Posted by SouthwestOregon201 View Post
........Would the single post remaining be the ground?....
Quote:
Originally Posted by Larry C Hanson View Post
Hi,
Most likely the third spade is the ground ......
I wonder if one of the terminals could possibly be a ground?
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Old 03-26-2013, 12:00 PM   #8
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Larry's drawing is correct. The 3rd post going to negative (or ground) will turn the light on when the switch is on.

I did the same thing when adding an LED indicator light to my water heater switch to remind me when it was on. (please excuse the greasy paw prints, it is clean now ).



Here you can see how I went from the switched side of the switch, to a negative (ground) from the ignition indicator light. Other than connecting to the 3rd terminal, this is how the wiring of the light on your switch works.

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Old 03-26-2013, 10:26 PM   #9
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Thanks for the help guys.

I put the switch on a table today and wired the unit to the battery through a small tail light. My first try was set up as drawn out and the switch light was on and the tail light was off. When I engage the switch, the tail light was off.

After several tries I installed the switch to engage the pump and didn't worry about the light going on.

Thanks again.
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Old 03-26-2013, 10:42 PM   #10
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Switch

Sorry to hear you could not get it wired so that the internal
indicator light worked. In case you misunderstood, the drawing
I sent you was of the internal workings of the switch.
Larry H
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Old 03-27-2013, 06:02 PM   #11
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sorry for being so vague
LED Rocker switches use a built-in LED to provide a clear indication that the switch is turned on, and are usually used for switching 12 volts DC. Single pole, single throw, or SPST, switches normally have two connections, one for the power going to the switch, and the other for the power leaving the switch to power the load when the switch is turned on. LED Rocker switches also have a third connection, which is needed to provide a ground connection for the LED.
That being said
one spade should be grounded to neg side battery -
one spade should be power from battery +
one spade should go to the device you want to power (which also should be grounded)
should work if spades are going to right device
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Old 03-29-2013, 02:49 PM   #12
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try this:
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Old 03-30-2013, 12:16 PM   #13
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here's from the manufacturer:
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