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  1. #1
    Ausfish Gold Member Dirtyfuzz's Avatar
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    Apr 2016
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    Sunshine Coast

    Hella switch wiring

    Purchased a couple of hella switches for deck lights and gunnel lights, canít get my brain into to gear and work out the wiring, any help would be appreciated


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  2. #2
    Ausfish Gold Member
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    Mar 2015
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    Kalbarri, WA

    Re: Hella switch wiring

    This is a Momentary switch. Meaning that it is only operating when you actually push the switch down. Used for something like a horn. Because this is an illuminated switch, you need to supply power to it, full time, for the illumination. They are the (+) and (-) terminals, self explantory. So then you need to decide whether you want the switch normally open (NO), or normally closed (NC). If it is normally open ( NO) , it will light up when you close it. So run the wire from where you are supplying the power to whatever you want to switch, to the C (common) terminal, and then run a wire from either the NO or NC ( most people would be using the NO) terminal, to positive on the device you want to turn on and off. You will have already run a negative wire to the negative terminal on the device . You will only use the NC terminal if you wish to turn something off momentarily, unusual sort of use.

    EDIT--just re-read your post, and saw what you have bought them for, I think you bought the wrong type . For turning lights and such on and off, you want a toggling type. ie, push it once, turns it on, push it again, turns it off. You have a Momentary type which is more normally used for something like a horn. Only operated along as you are pushing it.
    Last edited by ranmar850; 02-01-2020 at 02:46 PM. Reason: typo

  3. #3

    Re: Hella switch wiring

    They can be on/off or momentary so they may be the right ones. Essentially it is a single pole change over switch with what looks like an independent backlight - ie the backlight doesn't come on necessarily when you switch it on - unless you wire it that way. You have the option of for example, hooking all the + termicals to say, your anchor light switch so they all come on when the anchor light is turned on so you can see where they are .....or you can bridge the + terminal to the NO terminal and use the led to indicate when the switch is on. The C terminal will be wired to your bus bar or fuse block - wherever the power to run the device comes from, the NO terminal attaches to the load or device and the (-) terminal to your negative bus bar for the light negative. The NC terminal can be used if you want to double switch a device - much the same as a double switched light in your house but that changes the way the entire circuit is set up or to select which of two devices is in use.

  4. #4

    Re: Hella switch wiring

    My head hurts.

  5. #5
    Ausfish Gold Member Dirtyfuzz's Avatar
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    Apr 2016
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    Sunshine Coast
    Thread Starter

    Re: Hella switch wiring

    Roger! Thanks Scottar they are defo on/off the ones I have probably threw up the wrong schematic but the pins are pretty much the same, I couldnít work out which pin you sent the main power to and the NC pin had me confused,the normal rocker switches I had was just 3 pins, pretty simple.

    Too cap it off I think this is correct, C pin-power in from busbar,bridge + pin to NO pin for switch illumination when pressed in, - pin to - busbar - deck light wire to busbar,positive wire from deck light to NO terminal?


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  6. #6

    Re: Hella switch wiring

    Yep sounds right. I make the assumption they are LED's to come in under the 5 amp rating.

  7. #7
    Ausfish Gold Member Dirtyfuzz's Avatar
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    Apr 2016
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    Sunshine Coast
    Thread Starter

    Re: Hella switch wiring

    Switch rating is 5A so would assume led is a lot less!


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    Kevlacat 6.2m
    115 v4 evinrudes (going strong)

  8. #8

    Re: Hella switch wiring

    Momentary switches will not stay depressed when you push them in, hopefully that is what you have. I've just wired some up, if you want a schematic i can send you one but Scottar has pretty well laid it out.

  9. #9

    Re: Hella switch wiring

    Quote Originally Posted by Dirtyfuzz View Post
    Switch rating is 5A so would assume led is a lot less!


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    Should be. Just making sure you were aware of it in case you had halogens.

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