Page 33 of 33 FirstFirst ... 23313233
Results 321 to 325 of 325

Thread: Discovery 3 LED trailer lights

  1. #321
    Join Date
    Jun 2007
    Location
    Margaret River
    Posts
    738
    Quote Originally Posted by Tombie View Post
    You can reduce this heat by using a 25w 6.8ohm resistor instead of the 50w units.

    My next batch will be tested using these.
    Since the wattage rating of a resistor is its ability to handle the power of the circuit, using a lesser rated wattage resistor would produce more heat and would be more likely to fail.
    Having said this the 25W resistor is adequate as 6.8ohm resistor draws about 1.9A at 13 volts. P=VA 24.7watts.
    The resistor mimics a nominally 21watt turn indicator bulb

  2. #322
    Join Date
    Apr 2012
    Location
    Whyalla, South Australia
    Posts
    2,720
    Quote Originally Posted by Grappler View Post
    Since the wattage rating of a resistor is its ability to handle the power of the circuit, using a lesser rated wattage resistor would produce more heat and would be more likely to fail.
    Having said this the 25W resistor is adequate as 6.8ohm resistor draws about 1.9A at 13 volts. P=VA 24.7watts.
    The resistor mimics a nominally 21watt turn indicator bulb
    Correct. And as the system only needs ~15w to trigger, this should be more than adequate and far more compact to build.
    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. #323
    Join Date
    Feb 2011
    Location
    Hobart, Tasmania, Australia
    Posts
    3,335
    Quote Originally Posted by Tombie View Post
    Heck. I best get busy Discovery 3 LED trailer lights
    That would be great, thanks.
    Mine - modified MY03 LT L318 Discovery 2a HSE Td5 15P
    Hers - MY12 L319 Discovery 4 2.7L TDV6
    Dads - MY98 LJ Discovery ES 3.9L V8

  4. #324
    Join Date
    Aug 2016
    Location
    Melbourne
    Posts
    394
    When it came to me wiring up my caravan which has 12 pin flat plug to work with the round plug of the D4, I just added one resistor to one indicator wire to the conversion lead. I read that people seem to think the resistor gets very hot. All I can say is mine is mounted to the flat plug on a "heat sink" of strip metal I found lying around. I am sure if the heat generated by this resistor gets as hot as people say on this post, then I would notice some melting of plastic. In have not. I can only assume that the resistor gets hot when its working, which is in reality only when the indicator light is activated. I would assume for it to get so hot it melted plastic it would have to be working for a considerable time, and a lot more than we usually have our indicators working. What I did notice once I attached the resistor, my car behaved quite differently in regards to gear changes, no reversing chimes etc. I was surprised as I would have thought the only time the car would know a van is attached is when the resistor doing its job.
    2016.5 TDV6 Graphite D4, Corris Grey, APT sliders, Goe air comp plate, UHF & HF radio, Airflow snorkel, Discrete Winch,Compomotive rims with 265/65/18 KO Ta's, LLAMs, Traxide dual battery with winch set up, EAS emergency kit,

  5. #325
    Join Date
    Feb 2007
    Location
    Kalamunda: Perth
    Posts
    3,389
    Quote Originally Posted by dirvine View Post
    When it came to me wiring up my caravan which has 12 pin flat plug to work with the round plug of the D4, I just added one resistor to one indicator wire to the conversion lead. I read that people seem to think the resistor gets very hot. All I can say is mine is mounted to the flat plug on a "heat sink" of strip metal I found lying around. I am sure if the heat generated by this resistor gets as hot as people say on this post, then I would notice some melting of plastic. In have not. I can only assume that the resistor gets hot when its working, which is in reality only when the indicator light is activated. I would assume for it to get so hot it melted plastic it would have to be working for a considerable time, and a lot more than we usually have our indicators working. What I did notice once I attached the resistor, my car behaved quite differently in regards to gear changes, no reversing chimes etc. I was surprised as I would have thought the only time the car would know a van is attached is when the resistor doing its job.
    You have a D4. This thread is related to the D3 and LED trailer lights. The D4 and the D3 behave differently. The D3 is continually pulses the trailer indicator lights. So if you had done what you say you did on a D3 your trailer LED lights would flicker and your resistors would be worked even though you have not activated your indicators. Since they are continuously being pulsed they would be heating also. How hot they might get I can't say but the point being on a D3 they are not worked only when the indicator light is activated as you have assumed, they are worked all the time.

    People with D3's need to consider the difference between the D3 and the D4 with respect to the behaviour of load resistors and LED trailer lights.
    2011 D4 3.0 SDV6
    1999 D2 V8, in heaven
    1984 RRC, in hell

Page 33 of 33 FirstFirst ... 23313233

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!