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  1. #31
    Silver Member preludacris's Avatar
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    scotty your a champion
    thx heaps

  2. #32
    Gold Member hiru's Avatar
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    Quote Originally Posted by GreenViouS View Post
    Yeh they are usually called "horn relays" (well the one you want). they will have either 4 or 5 prongs. If there are 5 prongs, the centre one isnt used.

    Basically:
    the "30" prong is your +12v source line
    the "87" prong is your output line, or the line to go to + terminals on your accessories you want to power (neons or whatever)
    the "86" prong is your signal line, in our case it is the ciggy lighter
    and the "85" prong is grounding line (-)

    here's a basic setup for seperate horns running from a relay.

    okay so i know its been a while but i've finally got around to doing it.... and it didnt work!! the diagram u gave me is awesome its just I have mixed a few things up.... so i've got a few questions to clairfy....
    1. does it matter if i've mixed up the 30/87? coz i think i connected em the wrong way around... but i thought since it effectively runs through a switch it shouldnt matter...
    2. does the 85/86 run in series with the ciggy lighter globe or in parrallel? coz i'm thinking the coil in the relay has a very small resistance therefore needs to go in series? and that could be the reason that my testing is not working, since i am applying +12v across both, but it would be shorted through the 85/86...

    cheers!

  3. #33
    Gold Member hiru's Avatar
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    ******bump

  4. #34
    Gold Member GreenViouS's Avatar
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    Hey mate, theoretically yeh it shouldn't have mattered if you had 30 and 87 swapped, but swap them around just to be safe. 85/86 is in series, so run 86 to the + wire attached to the ciggy lighter, and ground 85 anywhere you like that has a good contact (may as well be the - wire on the ciggy lighter).

    I hope that helped

  5. #35
    Senior Member Scotty's Avatar
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    Can you draw up a diagram of what you have done? Might make it easier to see where the problem is.


    BTW have you got the polarity of your leds right?

  6. #36
    Gold Member hiru's Avatar
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    cheers greenvious... i'll give it another go n if i hav any more dramas i'll post up what i've done scotty! thanks guys! i reckon my problem could be in testing since i connected 85/86 across the battery w/out any resistor, in parallel with the +ve, ground which i guess must have made a short circuit so nothing would have lit up... i'll test it again with a resistor as well and see how it goes...

  7. #37
    Gold Member hiru's Avatar
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    ok its sorted! and it finally works! my first issue was in re-fitting the multi one to four ciggy lighter thingo with 12 guage wire... turns out black with white stripe is positive! and the second was in testing. the trigger line (85/86) needed a resistor in series with it when i connected it to the battery for testing, since it was in parallel with the 30/87.... it worked with the 30/87 the wrong way around but i switched it all the same just gotta do the install on friday hopefully and i'll post up some pics and my final circuit diagram! i cant believe it took so long... thanks so much for all your help peoples!

  8. #38
    Gold Member GreenViouS's Avatar
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    hahaha glad to hear it

  9. #39
    Gold Member hiru's Avatar
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    haha ok here we go again... i thought it was working and the testing was fine too and now that its in it works differently... no matter what voltage i have running thru the trigger, the relay is always switched on...i think i've overheadted the in all the soldering i did so this time i bought a clip for the relay....

    the main question i have this time is does the trigger for the relay go in series or in parallel with the ciggy lighter?

  10. #40
    Silver Member -dB-'s Avatar
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    parallel mate

  11. #41
    Gold Member hiru's Avatar
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    haha ok there's another mistake i made... cheers for that!! i had wrongly made the assumption that the coil of the relay had negligible resistance! and subsequently that it would effectively short the ciggy lighter... this shouldnt take too long too fix thanks!!

  12. #42
    Gold Member hiru's Avatar
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    It Works It Works It Finally Works!!

    YAY!! it has taken ages coz i havent had much time to work on it (an hourish every two weeks or so) but i finally got my footwell led arrays to run off a relay triggered by the dash lighting!! i'm so stoked that i am typing this straight away.... i am sitting in my car, with half the interior out, typing this!! (i had to get my lappy to check a few circuit diagrams in the online shop manuals)) yay!! thank you so much to everyone who i must have annoyed the hell out off!!

    cheers guys... pa rocks!!

  13. #43
    Senior Member Scotty's Avatar
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    hehe. Congrats

  14. #44
    Gold Member GreenViouS's Avatar
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    Hahaha well done... I wanna see the pics!

  15. #45
    Senior Member yuvi's Avatar
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    sorry to revive old thered here..

    i was workin on this today..

    i went with the Cigarette Lighter option.

    i was a bit reluctant, because i wasnt too sure if the neon cabling were thick enough..

    but it was ok, the Neons were working when i connected the wires up..

    after a while the same setup that i had working....was no longer working..i have a decent notion in circuitry to know that it was a proper closed circuit.

    at first i thought the neons were no good. but to double check i rewired my ciggy lighter back to normal, then realised the ciggy lighter itself wasn't working.

    my question is...is there a fuse in the wiring network for the cigarette lighter? or could the issue be something esle..


    will post pics of my progress below.

    HRPM Motorsports - "Driver development is equally if not more important than building a fast car"

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