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Thread: Trailer brake for the discovery 5

  1. #31
    Join Date
    Dec 2013
    Location
    Pullenvale, Queensland
    Posts
    19
    I rang the dealer again and they put me on to the technician who fits the trailer brake controllers. He told me the plug is not available in Australia so when he does an install he cuts the wires at the back of the plug and hard wires the Redarc into the factory wiring.

    With one exception. He said the factory power wire goes to a 30amp fuse which means no trailer brakes if the fuse blows. He said he runs a new power wire to the battery via an auto reset circuit breaker. This seems to make sense so I plan to follow his advice. I will order a plug from the US as suggested.
    Blakey

    1958 Series 2 SWB Ex Army Canvas Top (Long Gone)
    1985 Range Rover 4 door Factory Auto (Gone but not Forgotten)
    2006 Discovery 3 HSE (A wonderful thing)
    2017 Discovery 5 HSE

  2. #32
    Join Date
    Apr 2012
    Location
    South Australia
    Posts
    1,173
    Quote Originally Posted by brumby View Post
    I rang the dealer again and they put me on to the technician who fits the trailer brake controllers. He told me the plug is not available in Australia so when he does an install he cuts the wires at the back of the plug and hard wires the Redarc into the factory wiring.

    With one exception. He said the factory power wire goes to a 30amp fuse which means no trailer brakes if the fuse blows. He said he runs a new power wire to the battery via an auto reset circuit breaker. This seems to make sense so I plan to follow his advice. I will order a plug from the US as suggested.
    I disagree with this.

    If the 30a fuse fails itís because you have a short.
    The last thing you want is a 30a resetting short.
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Gone - D2 TD5

    D4 MY11
    - Just about the way I want it.
    D90 MY15 - Just about the way Mrs Tombie wants it.

    On order...
    Tesla Cybertruck Tri-Motor AWD due 2021


    And for those fun times:
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    2020 Suzuki Katana - 1000cc of pure mayhem - Just Send It

  3. #33
    Join Date
    Jan 1970
    Location
    Logan
    Posts
    20,752
    Yes, if a fuse fails or a circuit trips, it's important to investigate the underlying cause.
    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.

  4. #34
    Join Date
    Sep 2019
    Location
    Gold Coast
    Posts
    9

    Underdash plug for trailer brakes

    Hi, got a new D5 thatís needs trailer brake controller, having difficulty finding someone who seems to know what they are talking about, whom I trust, and doesnít cost the earth. I know asking a lot.

    has anyone actually used this plug, hopefully with a red arc to pro elite v3?

    please confirm.

    stuart

  5. #35
    Join Date
    Jan 1970
    Location
    Pennant Hills, Sydney
    Posts
    1,336
    Quote Originally Posted by Gmed View Post
    Hi, got a new D5 thatís needs trailer brake controller, having difficulty finding someone who seems to know what they are talking about, whom I trust, and doesnít cost the earth. I know asking a lot.

    has anyone actually used this plug, hopefully with a red arc to pro elite v3?

    please confirm.

    stuart
    The plug does work and is plug and play, no need to connect extra fuses, but it would be a case of matching the wires on plug to the wires on the controller, there is wiring info on this thread so should not be to hard to figure out, I have towed a variety of trailers in last couple of months with no problems both electric and electric over hydraulic, single axle and dual axle brakes I am using the Teckonsha P3.
    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.

    [COLOR=blue][B]In the event of nuclear war,Disregard this message[/B][/COLOR]

  6. #36
    Join Date
    Sep 2019
    Location
    Gold Coast
    Posts
    9

    brake controller

    Quote Originally Posted by stevo View Post
    The plug does work and is plug and play, no need to connect extra fuses, but it would be a case of matching the wires on plug to the wires on the controller, there is wiring info on this thread so should not be to hard to figure out, I have towed a variety of trailers in last couple of months with no problems both electric and electric over hydraulic, single axle and dual axle brakes I am using the Teckonsha P3.
    I had/have got a tekonsha in my D2, thinking of going to the redarc elite pro... mainly as it is all tucked away

    Gotta admit im a bit antsy doing this on a car with<2000km on it and tricky electrics...

    I welcome any opinions

  7. #37
    Join Date
    Apr 2012
    Location
    South Australia
    Posts
    1,173
    Quote Originally Posted by Gmed View Post
    I had/have got a tekonsha in my D2, thinking of going to the redarc elite pro... mainly as it is all tucked away

    Gotta admit im a bit antsy doing this on a car with<2000km on it and tricky electrics...

    I welcome any opinions
    Donít panic. The electrics arenít tricky if you follow the designed plans.
    Cheers
    Tombie

    Gone - D1 AZZKIKR - 5.0L Supercharged with the lot
    Gone - Tombraider Defender - Lara
    Gone - D2 TD5

    D4 MY11
    - Just about the way I want it.
    D90 MY15 - Just about the way Mrs Tombie wants it.

    On order...
    Tesla Cybertruck Tri-Motor AWD due 2021


    And for those fun times:
    2007 Suzuki M109R Boulevard Limited - 1800cc of V-twin goodness
    2020 Suzuki Katana - 1000cc of pure mayhem - Just Send It

  8. #38
    Join Date
    Sep 2019
    Location
    Gold Coast
    Posts
    9
    Quote Originally Posted by Tombie View Post
    Donít panic. The electrics arenít tricky if you follow the designed plans.
    Thanks Tombie, i've got the 3035-p, got the red-arc towpro elite v3 on the way... watch this space

  9. #39
    Join Date
    Nov 2009
    Location
    Melbourne
    Posts
    74
    I have seen a differant thoughts on this one so I will ask the question and hopefully get a straight response...

    Does the 19MY Discovery 5 detect a trailer with LED lights? That is, no need for resistors so it can detect it?

    Also, does it turn off the rear parking sensors when it detects a trailer?

    Cheers
    Numb Thumbs

  10. #40
    Join Date
    Oct 2011
    Location
    Hornsby Heights, NSW
    Posts
    408
    My MY18 does recognise trailers with LED lights, no need for any resistors. I would expect later models to work as well. And indeed, the reversing sensors are switched off when a trailer is attached.

    Ron
    2018 TD6 SE Silicon Silver
    2011 TDV6 2.7 Indus Silver - gone
    IIDTool BT

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