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Thread: suspension compressor D4

  1. 10th July 2023, 08:05 PM #1
    trackless
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    suspension compressor D4

    just changed the compressor unit on the air suspension and have the old unit, which still works.
    I want to use it as a compressor for some air horns I have . Checked the online manual I have for a wiring diagram but can't get/ find what I need.
    All I want is the power wire for the unit, nothing else so I can run it as I require.
    Can someone help?

    Tks
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  2. 10th July 2023, 10:57 PM #2
    BradC
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    It'll be the 2 big fat ones. From experience though, those compressors are low volume and high pressure. Traditional air horn compressors are vane units for low pressure, high volume. Not really the right tool for the job, but then if all you have is a hammer .....
    MY08 D3 - The Antichrist - "Permagrimace". Turn the key and play the "will it get me home again" lottery.
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  3. 11th July 2023, 09:56 AM #3
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    veebs
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    Hook it up to an air tank, and run the horn off that?
    2010 TDV6 3.0L Discovery 4 SE remapped to RRS output, Alaska White, GME XRS-330c, IIDTool BT, Dual Battery, Apple CarPlay, OEM Retrofitted: Cornering lights, Door card lights, Power + Heated Seats, Logic 7 audio
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  4. 11th July 2023, 10:23 AM #4
    BradC
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    Yep, that'd work well. Instant horn action on tap.
    A mate as a set of triple freight train horns. If I could find space for them under the bonnet I'd mount them up.

    Years ago I put triple air horns on my little Yamaha RS250R. People knew when I was displeased.
    MY08 D3 - The Antichrist - "Permagrimace". Turn the key and play the "will it get me home again" lottery.
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  5. 11th July 2023, 05:49 PM #5
    trackless
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    Thanks
    I thought it would be the big wires. I was going to use an air tank for volume.
    I bought these air horns in Pakistan when I flew helicopters in support of the massive earth quake there in 2005! Hope they still work.
    Those people love their airhorns and they are incredible loud!!

    Trackless
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  6. 11th July 2023, 07:22 PM #6
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    PerthDisco
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    But the big wires only supply power when the ECU activates them
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  7. 12th July 2023, 11:09 AM #7
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    Quote Originally Posted by PerthDisco View Post
    But the big wires only supply power when the ECU activates them
    Without an ecu they are directly powered, stick the wires to a battery and it fires up.
    MY08 TDV6 SE D3- permagrin ooh yeah
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  8. 12th July 2023, 02:09 PM #8
    DiscoJeffster
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    Ignoring that air horns are illegal on road cars, but hey, “for off road use only” disclaimer
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  9. 12th July 2023, 02:53 PM #9
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    Quote Originally Posted by DiscoJeffster View Post
    Ignoring that air horns are illegal on road cars, but hey, “for off road use only” disclaimer
    Mount the kerb, then let rip
    2010 TDV6 3.0L Discovery 4 SE remapped to RRS output, Alaska White, GME XRS-330c, IIDTool BT, Dual Battery, Apple CarPlay, OEM Retrofitted: Cornering lights, Door card lights, Power + Heated Seats, Logic 7 audio
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  10. 12th July 2023, 06:56 PM #10
    josh.huber Guest
    Officer. I was reminding me to use the road
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