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Thread: LED Trailer Lights

  1. #11
    Join Date
    Nov 2009
    Location
    Melbourne
    Posts
    110
    And why hasn't Land Rover fixed the problem?????????

    Cheers
    Numb Thumbs ;(

  2. #12
    Join Date
    Apr 2012
    Location
    Whyalla, South Australia
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    2,497
    Quote Originally Posted by Numb Thumbs View Post
    I am just back from the Ford dealer...

    I got one of the dongles, drove to the camper manufacturer's factory and hooked up a camper using the dongle.

    It works. $55 vs $700 plus fitting? I'll go with the dongle - not as elegant, but it works and is cheap.

    Cheers
    Numb Thumbs
    Whomever quoted $700 was having a lend!

    Glad itís worked for you. As I posted different volumes of LED emitters on the trailer will have different results.
    Cheers
    Tombie

    D4 MY11 - Stormy

    D90 MY15 - Ike
    D2 TD5

    Tesla Cybertruck Tri-Motor AWD On order...due 2021
    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Two wheels
    2007 Suzuki M109R LE
    2020 Suzuki Katana

  3. #13
    Join Date
    Apr 2012
    Location
    Whyalla, South Australia
    Posts
    2,497
    Quote Originally Posted by Numb Thumbs View Post
    And why hasn't Land Rover fixed the problem?????????

    Cheers
    Numb Thumbs ;(
    Consistency. No 2 trailers are consistent. They were when 21w bulbs were standard, not anymore.
    Cheers
    Tombie

    D4 MY11 - Stormy

    D90 MY15 - Ike
    D2 TD5

    Tesla Cybertruck Tri-Motor AWD On order...due 2021
    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Two wheels
    2007 Suzuki M109R LE
    2020 Suzuki Katana

  4. #14
    Join Date
    Nov 2009
    Location
    Melbourne
    Posts
    110
    I do not see the problem. They can detect the presence of a trailer by seeing that the circuit is complete. Using resistance does not ensure it is a trailer, anyway. My bike carrier has lights that run off the trailer plug...

    It is just laziness by manufacturers. We have found varous ways to solve the problem, why can't they?

    Cheers
    Numb Thumbs

  5. #15
    Join Date
    Apr 2012
    Location
    Whyalla, South Australia
    Posts
    2,497
    Quote Originally Posted by Numb Thumbs View Post
    I do not see the problem. They can detect the presence of a trailer by seeing that the circuit is complete. Using resistance does not ensure it is a trailer, anyway. My bike carrier has lights that run off the trailer plug...

    It is just laziness by manufacturers. We have found varous ways to solve the problem, why can't they?

    Cheers
    Numb Thumbs
    They canít see the circuit is complete - itís a diode LED Trailer Lights

    The sensing is only done on the indicator lines.

    Another system uses a pin switch on the flap of the plug - handy - until you use it to power something that isnít a trailer!

    Your bike carrier for instance - is not a good idea to have that change the trailer / towing dynamics. And canít program that out of the system - values sensed are just that.

    I recently built a box for another forum member with a D3 which has another complexity. All sorted easily sub $100.

    Another forum member had no joy with the Ford dongle so used it with 2 larger resistors fitted and all sorted.
    Cheers
    Tombie

    D4 MY11 - Stormy

    D90 MY15 - Ike
    D2 TD5

    Tesla Cybertruck Tri-Motor AWD On order...due 2021
    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Two wheels
    2007 Suzuki M109R LE
    2020 Suzuki Katana

  6. #16
    Join Date
    Jan 1970
    Location
    NSW South West Slopes
    Posts
    9,955
    I don't know how the latest LRs detect the existence of an operational trailer light but earlier ones had a 1 ohm resistor in the circuit and voltage drop across the resistor would indicate the presence of a load or not as voltage drop was nil if no globe on the circuit. LEDs don't draw enough current to cause detectable voltage drop across a 1 ohm resistor but if a resistor of sufficiently high impedance was used (eg 2K ohm) then an incandescent globe wouldn't illuminate due to insufficient current.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  7. #17
    Join Date
    Jan 1970
    Location
    Logan
    Posts
    22,956
    Crikey, is this still an issue? Even my simple old 2009 Defender recognises the LEDs in both our trailers - and even in the bullbar - and flashes the icon. It's not difficult. Any auto electrician should be able to fix it in half an hour.
    2009 Defender 110 2.4. ARB bulbar, Ironman winch, Safari snorkel, Steinbauer chip, AP HD clutch, Lightforce spots, larger tank, Off Road Systems drawer, Traxide 160 controller, Tekonsha brakes, Mulgo seat runners, Uniden UHF, Nuggetstuff seat corners, breathers, Polaris GPS.

  8. #18
    Join Date
    Jan 1970
    Location
    Pennant Hills, Sydney
    Posts
    1,349
    My D5 has no issues with the 3 trailers, the car trailer is no problem as it lights up like a Xmas tree, the box trailer and boat trailer both recognised by the system just basic lights on those.
    disco seriesII mods so far:-bullbar,hyd winch,
    detriot locker,lsd front,C.D.L kit,chipped and bigger intercooler,2" lift,rock sliders, lsd in transfer case, modified auto trans.

    In the event of nuclear war,Disregard this message

  9. #19
    Join Date
    Aug 2019
    Location
    Melbourne
    Posts
    2

    Hi I see you are in Melbourne I have an unused black box for sale

    Let me know if you want to try it out
    Quote Originally Posted by Numb Thumbs View Post
    I have the auto electrician coming next week to wire up my 19MY SE D5 with a Redarc Tow Pro Elite and a few other things. He asked me to check and see if my car recognised LED trailer lights.

    I went to the Crossover factory today, so I backed up to a couple of hybrid campers with LED tail lights - doesn't every trailer have LED tail lights now???? - and hooked it up.

    The right indicator flashed the trailer icon three times and the left once, but only some of the time. So, I take it, this means the D5 does NOT recognise LED trailer lights so does NOT recognise it has a trailer attached. So Advanced Tow Assist does NOT work? Plus all the other trailer related things like turning off the rear park assist sensors when towing etc.???? Trailer stability control???

    So it also means I have to install the ludicrously expensive "black box" so it will recognise trailers???? The car comes with a tow hitch plus extra towing features, yet it does not recognise nearly every new trailer out there????????? How is this moral or legal?

    Cheers
    Numb Thumbs

  10. #20
    Join Date
    Feb 2014
    Location
    Adelaide
    Posts
    320
    Well then, sit down every one, this is a true but horrifying story. I hesitate to start said story with " my mate took his new D5........." But, that's also true, where, I am not saying, but had a towpro, second battery isolator, Anderson plugs to the rear for said caravan, 2 way, TPMS repeater and some 12V lines to run some other accessories fitted in the front of the car. The workshop supplied everything except the 2 way and TPMS repeater including the $6000.00 invoice for the 4 days work.LED Trailer LightsLED Trailer Lights
    Yep, I am still shaking my head.
    MY13 D4 Nara Bronze HSE, Almond Interior, E-Diff, 20" for the road, 18" Compomotive for the fun stuff, Traxide, OL Bar, GAP IIDTool, Pioneer Tray, DAB+ and LOGIC 7 ICE retro-fit, Vintage SEV Marchal Driving lights (weird I know but what can I say)

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