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  1. #1
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    Jan 2007
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    Brisbane
    Car:
    B16A EG Civic

    How To Use The Dimmer With An EG6 Cluster.

    Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!


    Aim: To use the EG dimmer with an EG6 cluster. (also potentially LED's)

    Required: EG6 cluster, dimmer, wire, more twist-lock dash cluster bulbs.

    Steps:
    Ok, while looking on the net for some LED globes for my EG6 cluster I came across a few threads about how the dimmer doesn't work if you swap it for your standard EG cluster. I don't have a dimmer, so this isn't overly useful to me, but since I'm a little bored and interested in electronics I figured there's got to be a logical workaround for this.
    So I looked at the EG cluster wiring diagram and I noticed that the power for the gauge lights comes in on pin B11. On the stock cluster it then heads out on pin B12, and off to the dimmer switch (which is just a variable resistor). The EG6 clusters weren't originally designed to use a dimmer so the power earths out on the common ground for the cluster, pin A5.

    Here's the EG Cluster (with tacho) wiring diagram from the manual that I stuck together into a single image with photoshop:



    So basically (if you have a dimmer) all you have to do is make the lights ground through pin B12.
    To do this without connecting to the existing earth (pin A5) you'll need to use a different style of dash globe so the contacts don't touch the circuit board.

    Either something like a Narva 47734 dash globe (below), or modify another twist-lock dash globe so the contacts no longer touch the circuit board.


    Then all you have to do is rig up some wiring from B11, to each gauge illumination globe (it's only those 5 in the pic) and then back to B12. If using the Narva globe you could just solder the wires to the existing solder points on the back.
    I used yellows2k's cluster picture for a diagram because I noticed he was quite keen on working out how to do this
    Plus I was too lazy to go pull mine out of the car just for photos right now hehe.

    A5 is the black wire in the middle of the left plug. B12 is the top pin on the right plug, and B11 is the one under that.


    I'm not 100% sure that the dimmer will operate properly while the bulbs are in parallel because I don't have one to test with. So if you do have trouble then just link them up in series instead. The problem with the globes being in series though is that if one bulb blows, they'll all go out.

    If you decide to try this out, post up how it goes.

    Other comments:
    I'm also thinking that since some people think there's an internal load resistor inside the EG6 cluster that prevents LED's from seeming any brighter if used in place of incandescent bulbs; if you wire from B11, to each light and then to pin A5, it should bypass this resistor (if it does exist) and thus make the cluster brighter.
    After I get some new wide angle LED's, if it doesn't seem bright enough, I'll wire them up externally from the cluster and see if it makes a difference and report back.
    Last edited by 02gzm; 07-01-2011 at 05:51 PM.

  2. #2
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    Apr 2009
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    QLD
    Car:
    ED Sedan
    nice write up, you sure your car doesn't have a dimmer? I recall it being necessary for ADR vehicle compliance.

  3. #3
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    Jan 2009
    Location
    Melb/Syd
    Car:
    CP2 / EG5
    JDM EG6 doesn't use dimmer, hence the cluster doesnt work with the one in Australian EGs

  4. #4
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    Jan 2007
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    Brisbane
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    B16A EG Civic
    Quote Originally Posted by markismaximus View Post
    nice write up, you sure your car doesn't have a dimmer? I recall it being necessary for ADR vehicle compliance.
    Yea I've got the dimmer removed and have a coin pocket

  5. #5
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    Nov 2006
    Location
    Brisbane
    Car:
    Civic EG Si Hatchi
    im pretty sure if you wire them to the diagram you put up (last one), if one globe blows the rest should still operate. it does look like a series circuit but technically its
    a parallel circuit. if it was series the negative from the first globe would have to go to the first point of the second globe and so on...

    so if you were to comply a car that hasnt been registered for a while, would i "have" to leave the dimmer switch in to comply?
    [h=Massive EG6/DC2 Part Out (majority brand new)
    http://www.ozhonda.com/forum/showthr...y-brand-new%29]2[/h]

  6. #6
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    Jul 2006
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    JDM PARTS BRISBANE
    Car:
    EURO LUX
    all you need is to join a dimmer/dimmer switch to light cluster wiring

    and it will work pretty simple

    had this set up in my eg6

  7. #7
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    Jan 2007
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    Quote Originally Posted by riruiz_88 View Post
    im pretty sure if you wire them to the diagram you put up (last one), if one globe blows the rest should still operate. it does look like a series circuit but technically its
    a parallel circuit. if it was series the negative from the first globe would have to go to the first point of the second globe and so on...

    so if you were to comply a car that hasnt been registered for a while, would i "have" to leave the dimmer switch in to comply?
    Yea the diagram I put up is in parallel. I said if the dimmer doesn't work with the lights in parallel (because it's a variable resistor that only has a certain range) to use a series circuit so the line resistance is increased from all the bulbs.

  8. #8
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    Feb 2008
    Location
    Lala Land SA
    Car:
    EG5, PP1
    im pretty keen to try this out... any chance of re-loading the diagram as its no longer showing up cheers!
    Getting there...

  9. #9
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    Jan 2007
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    Brisbane
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    Fixed.

    Lemmie know how you go. I still haven't found the time or effort to do it yet.

  10. #10
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    Feb 2008
    Location
    Lala Land SA
    Car:
    EG5, PP1
    It's actually funny, I posted that just before going ahead and installing my EG6 cluster but it turns out my dimmer works so the previous owner must have done this already. Sweeet good writeup nevertheless!
    Getting there...

  11. #11
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    Join Date
    Nov 2004
    Location
    Manly Yo
    Car:
    ED/EG5/EP3/JAZZ
    Hey Guys

    Last time I just added brighter bulbs with my new EG and EG6 cluster I'm going to try and get the dimmer working

    Now I got an idea, can I just replace the rubber circuit board. off my EG5 cluster onto the EG6 unit and bam dimmer?
    161.4KW ATW Tuned By TODA
    EG5 JDM B16A SiR-II TURBO

    13.28@106.6mph 2.117 60ft On RE001

  12. #12
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    Nov 2004
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    Manly Yo
    Car:
    ED/EG5/EP3/JAZZ
    Quote Originally Posted by 90LAN View Post
    all you need is to join a dimmer/dimmer switch to light cluster wiring

    and it will work pretty simple

    had this set up in my eg6
    Post how bro...?
    161.4KW ATW Tuned By TODA
    EG5 JDM B16A SiR-II TURBO

    13.28@106.6mph 2.117 60ft On RE001

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