12 volt 3 prong switch install problem. need help with wiring

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Old 12-11-11, 10:20 AM
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12 volt 3 prong switch install problem. need help with wiring

i took a 9 volt battery and found out where negative and positive is , but what about the middle prong what does that go to.

i want to hook the led light to the switch then to the + and negative of an amplifier for strobe light like purposes/disco ball effects.
 
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Old 12-11-11, 10:31 AM
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What you have is a double pole single throw switch. The hot wire would go to the middle terminal, while two separate applications would go on each of the two other terminals. For instance, you had a red and green light that needed to be operated right after one another. Right would be red, and left would be green. Now, if you leave one of the terminals empty, you could use it as a spst switch, with hot to middle and one application to one terminal and the other empty. I am assuming there is no resting place between right and left throws.
 
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Old 12-11-11, 10:50 AM
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Originally Posted by chandler View Post
What you have is a double pole single throw switch. The hot wire would go to the middle terminal, while two separate applications would go on each of the two other terminals. For instance, you had a red and green light that needed to be operated right after one another. Right would be red, and left would be green. Now, if you leave one of the terminals empty, you could use it as a spst switch, with hot to middle and one application to one terminal and the other empty. I am assuming there is no resting place between right and left throws.
i am confused once you said red and green cause i am only hooking up one color blue and what is a resting place i'll look up dpst illuminated switches and give you a model
 
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Old 12-11-11, 11:15 AM
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I think that Chandler is saying that he assumes there is no center position on your particular switch. That a double throw double pole switch moves only back and forth, but rather than off and on, it switches between loads. In his example it switches delivering power between a red and green light, but never both at the same time and with this kind of switch one is always on.
 
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Old 12-11-11, 11:31 AM
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correct , but this is an always on /always off switch with the switch only being illuminated when the power is going through it. positive would go to the top /on position and ground would go to bottom/negative position, but does the middle one go to the lights cause i want them to blink with the music, will this happen if i put the positive of the amp channel to the positive switch and then the middle prong to the positive light then ground the lights and put the negative channel to the negative on the switch
 
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Old 12-11-11, 11:51 AM
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No offense intended dizzy, but your terminology and conception of how electricity/electronics work is pretty lacking.

Connecting the audio outputs from a stereo aren't going to light a light. It will probably mess up your stereo.

Also, switches don't have positives and negatives. They have contacts.

You can buy little kits that will do what you want with a few electronic components, but you'll probably need to know how to solder. I think they DO make kits that you can just push the components into without soldering.
 
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Old 12-11-11, 02:13 PM
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've seen it done in car audio, but without a switch

ok so maybe the switch won't light up if i use the amps + and - channel, however the led light will light up if directly plugged in. anyone have a tutorial/diy on how to connect a switch properly in 12v applications to a led light.!.!
 
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