Electrical & Lights 12v live switched

Discussion in '1st Generation (2004-2011)' started by Bones126, Tuesday 18th Aug, 2015.

  1. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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    Where can I find under the bonnet a 12v live feed that is only live when the ignition is switched to and past accessory?

    Cheers
    Dave
     
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  2. Nighthawk Guest

    United Kingdom Richard Milton Keynes
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    What are you needing it for?
     
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  3. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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    Fitting a DRL switch, needs a permanent live and earth plus a live from an accessory switched live that turns off when ignition is off.
     
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  4. chris2982 Premium Member Club Supporter

    United Kingdom Chris Rowlands Gill
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    what harness are you using.. I've got this one ebay 291138639315 which only needs positive and negative, , and headlight positive if you want the auto dim option,, which I will be using...
    also what DRLs are you using.
     
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  5. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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    It's different to yours but reads as though it wires up the same, on phone at moment so can't post which model it is.
    Was wonders how it knows to turn the lights on if it's wired to a perm live.
    Accessory wire acts as a time delay when you turn the car off so thought that might be when it turns the lights on.
    I'll be using the the side lights with led's, not fitting drls at the moment as I can't find any I like. Was going to try splitting the headlamp and fitting strip drls in there. But need to figure that out.
     
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  6. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
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    You could look for a fuse in the engine fuse box that is switched on with ignition and then use a piggyback fuse holder on it.
     
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  7. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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    Think I'll have to speedy, was trying to avoid that but if needs must :Niceone:
     
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  8. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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  9. Ben28 Senior Member ★ ★ ☆ ☆ ☆

    United Kingdom Ben Shetland
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    I was looking for a switched live under the bonnet for the same reason. Checked all the fuses and found they stayed live after ign off etc.
    I found a good switched live under the bonnet in a smaller box above the main fuse box, it has 2 or 3 relays in it. One of the pins which feeds the relay is a perfect switched live .
     
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  10. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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    Superb @Ben28 , thanks for sharing. Will be on it later. Cheers.
     
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  11. Auto Ali Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Ali London
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    Hey guys found a 12v live switched in the larger fuse box under the bonnet number 31 rain sensor, but also number 17 is empty it's for a designated DRL light but was constant
    IMG_20160313_135809. IMG_20160313_135756. IMG_20160313_132132.
    12v after the key is out, so went with 31 see attached pics hope this helps.
    Kind regards Ali
    - - - Updated - - -
    IMG_20160313_023235. IMG_20160313_023235.

    IMG_20160313_133726. IMG_20160313_212948. IMG_20160313_212958.
     

    Attached Files:

    Last edited by a moderator: Monday 14th Mar, 2016
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  12. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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    Superb, great bit of investigation :Thumbup:

    What do you think to the lights??
     
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  13. Auto Ali Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Ali London
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    Brilliant thanks for the idea @Bones126 have you got yours in? I really have small hands and all i had to remove was for he washer bottle and the plastic piece above the grill, if you have any questions just ask me,one thing I noticed they are very bright . Is there anyway I can dim them down after headlights are switched on @Bones126 .
     
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  14. Bones126 Top Contributor ★ ★ ★ ★ ☆

    England Dave Birmingham
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    Glad you like them, yes I've had mine in a while now. Nice and easy to fit, I found a different switched live but may try your suggestion.
    There are DRL modules on ebay you can buy that dim them when you turn you lights on, I haven't got one but have thought about doing it for the MOT.
     
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  15. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
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    Good stuff @Auto Ali !

    Did you put a place a fuse inline the wire coming the fuse you tapped in the fuse box ?

    Also you should get a battery tie down fabbed, it's dangerous having a battery that isn't held down.
     
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  16. Auto Ali Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Ali London
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    Hi @SpeedyGee yes the battery is tied down with the bracket but in the pics its off to show the washer bottle moved for access to the indicator light, but I'm waiting for a fuse tap from eBay, should the fuse tap be the same rating as the fuse I'm tapping into?
     
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  17. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
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    Ah that's good.

    The fuse should be correctly sized for the device it is powering, so see what this DRL switch needs.
     
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  18. Auto Ali Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Ali London
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    Hi @SpeedyGee the DRLs are 20watt is a 15amp fuse sufficient? thanks
     
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  19. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
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    I (amps) = P(watts) / Volts

    so I = 20/12 = 1.66A

    You only need a 2A fuse
     
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  20. Auto Ali Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Ali London
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    Thank you @SpeedyGee great help
     
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