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Forgot how to wire "reverse polarity" switch

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  • Forgot how to wire "reverse polarity" switch

    Guys, as the title says, I forgot how to wire a switch so that the + & - are reversed. Also, I forgot which switch I should use. Thanks.

  • #2
    :-P if i knew how i would help you but im just a post whore hahah

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    • #3
      please be a bit more exact, i do not understand the question
      Sorry for the english

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      • #4
        is this for a forward/ backward motor? I think a 3 way switch ie center is + in then one outer is + out and other is - out
        1990 Jeep Cherokee
        2000 VW Golf TDI 4dr
        2005 VW GTI MKIV - SOLD

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        • #5
          WebDog, the answer is yes, I need to drive a motor one way and then flip the switch to run it the other way, that is what I need. looks like you know what I need, mind telling me what to do. thanks

          Sorry guys I was not clear.

          xdjxklusivex: I would not read a post if you weren't in it

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          • #6
            Here you go:

            Dual ON-ON
            Double Pole, Double Throw = DPDT

            A pair of on-on switches which operate together (shown by the dotted line in the circuit symbol).

            A DPDT switch can be wired up as a reversing switch for a motor as shown in the diagram.

            ON-OFF-ON
            DPDT Centre Off
            A special version of the standard SPDT switch. It has a third switching position in the centre which is off. This can be very useful for motor control because you have forward, off and reverse positions. Momentary (ON)-OFF-(ON) versions are also available where the switch returns to the central off position when released
            Attached Files
            1990 Jeep Cherokee
            2000 VW Golf TDI 4dr
            2005 VW GTI MKIV - SOLD

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            • #7
              This is exactly what I want. Thanks much, apreciate the help.

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              • #8
                help would be great

                I see you know what you are talking about... the only problem is I dont. I was searching on how to do this with a relay, but I could only find out how to do it with a dpdt rocker switch and not a relay. Can you please help me out? I have a relay with 8 contact points and I have no clue what one does what.

                I need to turn my car on and the power makes a motor move up. then I need to turn the car off and the motor go the other way.

                I understand that when I turn the car off the power goes as well, but I need to find out how to get arund this along with getting this relay to work.
                Attached Files

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                • #9
                  Originally posted by WebDog View Post
                  Here you go:

                  Dual ON-ON
                  Double Pole, Double Throw = DPDT

                  A pair of on-on switches which operate together (shown by the dotted line in the circuit symbol).

                  A DPDT switch can be wired up as a reversing switch for a motor as shown in the diagram.

                  ON-OFF-ON
                  DPDT Centre Off
                  A special version of the standard SPDT switch. It has a third switching position in the centre which is off. This can be very useful for motor control because you have forward, off and reverse positions. Momentary (ON)-OFF-(ON) versions are also available where the switch returns to the central off position when released

                  Just wanted to say thanks for the diagram.

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