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Thread: Viper Fan

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    Default Viper Fan

    I have a Viper fan and before installing I wanted to test. Want to make sure I did it right. I grounded the black wire and applied 12v to the other 2 pins one at a time. As I understand it one is high speed and the other is low speed. The fan would not run in low or high. I also ran a continuity test between ground and other 2 pins. It checked OK. Am I missing something?
    Dick

  2. #2

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    Quote Originally Posted by dstoots View Post
    I have a Viper fan and before installing I wanted to test. Want to make sure I did it right. I grounded the black wire and applied 12v to the other 2 pins one at a time. As I understand it one is high speed and the other is low speed. The fan would not run in low or high. I also ran a continuity test between ground and other 2 pins. It checked OK. Am I missing something?
    Dick
    If you are just trying to give it 12 volt power I believe that is a big ole FAIL. I remember it needing some contraption of relays and such to work, it sucks MAJOR juice.


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    Quote Originally Posted by WhiteRT View Post
    If you are just trying to give it 12 volt power I believe that is a big ole FAIL. I remember it needing some contraption of relays and such to work, it sucks MAJOR juice.
    http://www.dakotart.com/forum/showthread.php?t=12269


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    I believe the relay just allows the voltage to go to the fan. It does not increase the amps. like a transformer would do. The relay acts like a switch in that it allows a high amp draw to go directly to the fan.

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    Do you have a fan controller kit? or did you wire up your own? Usually the kits are pretty self explanitory and simple. If you want a nice kit get a variable speed controller kit. I myself used on my old s10 a 25 dollar kit from oriellys and only ran it on low with a 40 amp fuse. Worked like a charm and lasted. Just try to find a temp switch that is in line with the upper hose and dont use the one that pushes into the radiator fins. I found those to be unreliable. Just my .02. hope this helps some

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    I have the kit but want to test the fan before installing. Ideas?

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    bump

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    Quote Originally Posted by dstoots View Post
    bump
    A relay is just a switch, it doesn't amp up the power.

    You need to be grounded to the same source you are getting the 12 volts from.
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