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Thread: trailer wiring

  1. 10th May 2014, 09:42 AM #1
    boardrider
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    trailer wiring

    hi everyone,
    i am still trying to resolve this issue.
    i have now had my trailer wiring done as required thru the tow fuse box.
    my problem is that the car does not seem to recognise a trailer connection.
    i have come to this conclusion as the trailer symbol does not come on when the ignition is switched on. the auto electrician has now givern up and told me to take to someone else.another question that i would like answered is,does anyone know what fuse would be controlling the trailer symbol on the dash. thanks,i need this fixed
    boardrider
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  2. 10th May 2014, 09:52 AM #2
    MR LR
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    Has it got LED lights?
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  3. 10th May 2014, 10:06 AM #3
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    jsp
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    Quote Originally Posted by boardrider View Post
    .
    i have come to this conclusion as the trailer symbol does not come on when the ignition is switched on.
    What sort of car is it?

    my P38 and L322 rangies only show that symbol when the indicators are on - not just when ever a trailer is connected.

    2007/2002/2000/1994/1993/1988/1987/1985/1984/1981/1979/1973 Range Rover 1986 Wadham Stringer
    and a Nissan Cube............
    South Australia.
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  4. 10th May 2014, 10:37 AM #4
    boardrider
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    yes its got leds and i have fitted the divice to help pulsing.
    its an 08 d3 diesel
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  5. 10th May 2014, 10:46 AM #5
    MR LR
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    Try it with a trailer that has indandescent lights and see how that goes.
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  6. 10th May 2014, 03:37 PM #6
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    Gippslander
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    i have two trailers one with incandescent bulbs and one with led's the cars see the incandescent trailer but not the led trailer.
    Cars are D3 Disco and P38 Rangie hope that helps.

    Gippy
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  7. 10th May 2014, 04:19 PM #7
    boardrider
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    hi there,
    i think people are misreading my post.
    the car does not recognise the trailer,by the symbol on the dash when i plug in the connection.
    i have 2 trailers,both have leds,they work fine. it does not show the trailer symbol on the dash at start up ,therefore i assume that the car does not know a trailer is connected and therefore make engine system adjustments as they are required.
    thanks for your interest,just hoping someone does read this that knows why it is not recognising the trailer
    thanks
    boardrider
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  8. 10th May 2014, 04:23 PM #8
    boardrider
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    gippy.
    thanks for that suggestion of the incandecent bulb,i will c if i can find a trailer to try that,cheers
    boardrider
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  9. 11th May 2014, 12:57 AM #9
    MR LR
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    LED lights don't have a high enough resistance, if your ballast isn't good enough it still won't recognize the trailer as the resistance will be too low, the resistance is what triggers the trailer circuit, eliminate issues with the car by testing with traditional incandescent trailer lights, this should pick up on start up, and signal.

    If it doesn't the car is the issue, I assume the lights work anyway?
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  10. 11th May 2014, 08:51 AM #10
    boardrider
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    mr lr.
    thanks for that.
    that is now my next step,try with normal lights.
    yes all the lights work fine,just the car is not recognising a trailer.as i have said both my trailers have led lights,now i need to find the right trailer to try on .if it is the car any suggestions where to look as the auto elec cant work it out to date
    boardrider
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