• 1981 Cobra Trailer Tail Light Lens

    From David Cleveland@21:1/5 to All on Tue Jun 28 11:12:00 2022
    I have a Cobra trailer that was manufactured in 1981. It has the old, round tailights that have a red lens with an amber rectangle in the center. The tailight was originally manufactured by a company named VLO.

    I have contacted Wings and Wheels as well as Cobra Trailer. The lens is no longer manufactured. Does anyone have one or know of someone who may have a no longer in use trailer of that vintage?

    David

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  • From stephen.szikora.t3@gmail.com@21:1/5 to david.s....@gmail.com on Wed Jun 29 05:05:40 2022
    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the old, round tailights that have a red lens with an amber rectangle in the center. The tailight was originally manufactured by a company named VLO.

    I have contacted Wings and Wheels as well as Cobra Trailer. The lens is no longer manufactured. Does anyone have one or know of someone who may have a no longer in use trailer of that vintage?

    David
    Just swap put the taillight assemblies for modern LED units. It is a big improvement in visibility. The originals were a metric dimension but very close to a standard (NA) replacement unit. I had to do a wee (and I do mean very little) bit of filing to
    widen the holes to get the new ones in.

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  • From Martin Gregorie@21:1/5 to stephen.s...@gmail.com on Wed Jun 29 12:48:52 2022
    On Wed, 29 Jun 2022 05:05:40 -0700 (PDT), stephen.s...@gmail.com wrote:

    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com
    wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the old,
    round tailights that have a red lens with an amber rectangle in the
    center. The tailight was originally manufactured by a company named
    VLO.

    I have contacted Wings and Wheels as well as Cobra Trailer. The lens is
    no longer manufactured. Does anyone have one or know of someone who may
    have a no longer in use trailer of that vintage?

    David
    Just swap put the taillight assemblies for modern LED units. It is a big improvement in visibility. The originals were a metric dimension but
    very close to a standard (NA) replacement unit. I had to do a wee (and I
    do mean very little) bit of filing to widen the holes to get the new
    ones in.

    Seconded. However, do check that the LED lighting you intend to fit is compatible with your tow vehicle. I've just had my trailer's (remarkably flimsy, old and unreliable) incandescent tail lights replaced with LEDs,
    which are working well.

    The outfit that did the rewiring and reinstallation started by point out
    that some modern car's lighting systems are incompatible with LED trailer lighting. It seems to be something to do with the LED resistance/voltage
    drop differing from the equivalent values for incandescent bulbs, which
    can cause the car to think the trailer taillights aren't working.

    So, if you do the work yourself, plug the LED tail lights into the car's
    socket and check that they work correctly BEFORE installing them on the trailer.

    FWIW the people who replaced my tail-lights did exactly that.


    --

    Martin | martin at
    Gregorie | gregorie dot org

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  • From Charlie M. (UH & 002 owner/pilot)@21:1/5 to Martin Gregorie on Wed Jun 29 06:02:24 2022
    On Wednesday, June 29, 2022 at 8:48:57 AM UTC-4, Martin Gregorie wrote:
    On Wed, 29 Jun 2022 05:05:40 -0700 (PDT), stephen.s...@gmail.com wrote:

    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com
    wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the old,
    round tailights that have a red lens with an amber rectangle in the
    center. The tailight was originally manufactured by a company named
    VLO.

    I have contacted Wings and Wheels as well as Cobra Trailer. The lens is
    no longer manufactured. Does anyone have one or know of someone who may
    have a no longer in use trailer of that vintage?

    David
    Just swap put the taillight assemblies for modern LED units. It is a big improvement in visibility. The originals were a metric dimension but
    very close to a standard (NA) replacement unit. I had to do a wee (and I
    do mean very little) bit of filing to widen the holes to get the new
    ones in.
    Seconded. However, do check that the LED lighting you intend to fit is compatible with your tow vehicle. I've just had my trailer's (remarkably flimsy, old and unreliable) incandescent tail lights replaced with LEDs, which are working well.

    The outfit that did the rewiring and reinstallation started by point out
    that some modern car's lighting systems are incompatible with LED trailer lighting. It seems to be something to do with the LED resistance/voltage
    drop differing from the equivalent values for incandescent bulbs, which
    can cause the car to think the trailer taillights aren't working.

    So, if you do the work yourself, plug the LED tail lights into the car's socket and check that they work correctly BEFORE installing them on the trailer.

    FWIW the people who replaced my tail-lights did exactly that.


    --

    Martin | martin at
    Gregorie | gregorie dot org

    The fix is to add a resister to the blinker circuit. This also cures "LED fast blink". There is info on this all over, Diode Dynamics has a page on this.
    Common issue listed on car forums.

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  • From kevin anderson@21:1/5 to Hank Nixon on Wed Jun 29 08:06:50 2022
    On Wednesday, June 29, 2022 at 10:54:28 AM UTC-4, Hank Nixon wrote:
    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the old, round tailights that have a red lens with an amber rectangle in the center. The tailight was originally manufactured by a company named VLO.


    I was able to use the lens out go the one below for a lens missing on my 1985 Cobra trailer. $6.54 delivered to the house, and it was a 30 second job instead of all the rewiring. Also, if it does not fit, when free return if you are Amazon Prime
    member. I still have the remaining parts if something goes wrong in the future.

    https://www.amazon.com/gp/product/B0045LXHUA/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1

    Kevin
    92

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  • From Hank Nixon@21:1/5 to david.s....@gmail.com on Wed Jun 29 07:54:24 2022
    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the old, round tailights that have a red lens with an amber rectangle in the center. The tailight was originally manufactured by a company named VLO.

    I have contacted Wings and Wheels as well as Cobra Trailer. The lens is no longer manufactured. Does anyone have one or know of someone who may have a no longer in use trailer of that vintage?

    David

    Lots of economical solutions available from E-Trailer. I would not waste time trying to save old crap.
    UH

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  • From Dan Marotta@21:1/5 to kevin anderson on Wed Jun 29 09:25:19 2022
    I love it! If the car can't recognize the low voltage drop of the LED,
    insert a resistor in series. That way the power that was converted to
    heat in the incandescent bulb is now converted to heat in a resistor!

    Another win for green power!

    Yeah, I know about older and newer cars. It was a joke. Deal with it.

    Dan
    5J

    On 6/29/22 09:06, kevin anderson wrote:
    On Wednesday, June 29, 2022 at 10:54:28 AM UTC-4, Hank Nixon wrote:
    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com wrote: >>> I have a Cobra trailer that was manufactured in 1981. It has the old, round tailights that have a red lens with an amber rectangle in the center. The tailight was originally manufactured by a company named VLO.


    I was able to use the lens out go the one below for a lens missing on my 1985 Cobra trailer. $6.54 delivered to the house, and it was a 30 second job instead of all the rewiring. Also, if it does not fit, when free return if you are Amazon Prime
    member. I still have the remaining parts if something goes wrong in the future.

    https://www.amazon.com/gp/product/B0045LXHUA/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1

    Kevin
    92

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  • From Moshe Braner@21:1/5 to Dan Marotta on Wed Jun 29 19:28:24 2022
    Joke OK. But it's also sad. One of the advantages of LED tail lights
    on a long trailer is that the lower current means less voltage drop in
    the long wires, thus nice bright lights. If you have to add those
    resistors (in parallel, not series) put them up front, not back in the
    light fixtures.

    Glider trailers tend to last longer than cars, thus, even if the LED
    lights will work OK with your current car, they may not with a future
    car. That's not a reason to avoid convert the lights. But set it up so
    that you can add those resistors later. Hopefully future cars will be
    more accommodating of LED lights than the current ones.

    The trend though seems to be towards microchips in every corner of a
    car, and the LED lights in most new cars seem to be controlled in a way
    that makes them blink at high speed. (I don't mean the turn-signal
    blink, I mean a very rapid blink, say 30 times per second, that you can
    see if you swing your head, or if a car crosses in front of you from one
    side to the other.) How those circuits interact with trailers I don't
    have a clue. If the car manufacturer offers an add-on trailer adapter
    ask whether it'll work with LED lights in the trailer.



    On 6/29/2022 11:25 AM, Dan Marotta wrote:
    I love it!  If the car can't recognize the low voltage drop of the LED, insert a resistor in series.  That way the power that was converted to
    heat in the incandescent bulb is now converted to heat in a resistor!

    Another win for green power!

    Yeah, I know about older and newer cars.  It was a joke.  Deal with it.

    Dan
    5J

    On 6/29/22 09:06, kevin anderson wrote:
    On Wednesday, June 29, 2022 at 10:54:28 AM UTC-4, Hank Nixon wrote:
    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com
    wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the
    old, round tailights that have a red lens with an amber rectangle in
    the center. The tailight was originally manufactured by a company
    named VLO.


    I was able to use the lens out go the one below  for a lens missing on
    my 1985 Cobra trailer.    $6.54 delivered to the house, and it was a
    30 second job instead of all the rewiring.  Also, if it does not fit,
    when free return if you are Amazon Prime member.  I still have the
    remaining parts if something goes wrong in the future.

    https://www.amazon.com/gp/product/B0045LXHUA/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1


    Kevin
    92

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  • From Nicholas Kennedy@21:1/5 to Moshe Braner on Wed Jun 29 19:44:47 2022
    On Wednesday, June 29, 2022 at 5:28:17 PM UTC-6, Moshe Braner wrote:
    Joke OK. But it's also sad. One of the advantages of LED tail lights
    on a long trailer is that the lower current means less voltage drop in
    the long wires, thus nice bright lights. If you have to add those
    resistors (in parallel, not series) put them up front, not back in the
    light fixtures.

    Glider trailers tend to last longer than cars, thus, even if the LED
    lights will work OK with your current car, they may not with a future
    car. That's not a reason to avoid convert the lights. But set it up so
    that you can add those resistors later. Hopefully future cars will be
    more accommodating of LED lights than the current ones.

    The trend though seems to be towards microchips in every corner of a
    car, and the LED lights in most new cars seem to be controlled in a way
    that makes them blink at high speed. (I don't mean the turn-signal
    blink, I mean a very rapid blink, say 30 times per second, that you can
    see if you swing your head, or if a car crosses in front of you from one
    side to the other.) How those circuits interact with trailers I don't
    have a clue. If the car manufacturer offers an add-on trailer adapter
    ask whether it'll work with LED lights in the trailer.
    On 6/29/2022 11:25 AM, Dan Marotta wrote:
    I love it! If the car can't recognize the low voltage drop of the LED, insert a resistor in series. That way the power that was converted to
    heat in the incandescent bulb is now converted to heat in a resistor!

    Another win for green power!

    Yeah, I know about older and newer cars. It was a joke. Deal with it.

    Dan
    5J

    On 6/29/22 09:06, kevin anderson wrote:
    On Wednesday, June 29, 2022 at 10:54:28 AM UTC-4, Hank Nixon wrote:
    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com
    wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the
    old, round tailights that have a red lens with an amber rectangle in >>>> the center. The tailight was originally manufactured by a company
    named VLO.


    I was able to use the lens out go the one below for a lens missing on
    my 1985 Cobra trailer. $6.54 delivered to the house, and it was a
    30 second job instead of all the rewiring. Also, if it does not fit,
    when free return if you are Amazon Prime member. I still have the
    remaining parts if something goes wrong in the future.

    https://www.amazon.com/gp/product/B0045LXHUA/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1


    Kevin
    92

    I put LED tails lights in my 1980 Cobra
    Cheap and they look great
    No voltage/ wiring problems
    E Trailer
    Nick
    T

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  • From =?UTF-8?Q?John_DeRosa_OHM_=E2=84=A6@21:1/5 to All on Wed Jun 29 22:18:01 2022
    I converted my trailer to LED bulbs from http://superbrightleds.com replacing the incandescent ones. Have not had to use the dreaded resistor on a 2013 Jeep and a 2016 Nissan.

    Info can be found at http://aviation.derosaweb.net/presentations/#trailer

    Enjoy, John (OHM)

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  • From Dan Marotta@21:1/5 to Moshe Braner on Thu Jun 30 08:43:42 2022
    Seriously, I think LEDs are great. That was just too good to pass up.
    We're seeing that quick blinking in traffic signals, not by eye, but
    when recorded and played back. Something about sampling rate.

    Dan
    5J

    On 6/29/22 17:28, Moshe Braner wrote:
    Joke OK.  But it's also sad.  One of the advantages of LED tail lights
    on a long trailer is that the lower current means less voltage drop in
    the long wires, thus nice bright lights.  If you have to add those
    resistors (in parallel, not series) put them up front, not back in the
    light fixtures.

    Glider trailers tend to last longer than cars, thus, even if the LED
    lights will work OK with your current car, they may not with a future
    car.  That's not a reason to avoid convert the lights.  But set it up so that you can add those resistors later.  Hopefully future cars will be
    more accommodating of LED lights than the current ones.

    The trend though seems to be towards microchips in every corner of a
    car, and the LED lights in most new cars seem to be controlled in a way
    that makes them blink at high speed.  (I don't mean the turn-signal
    blink, I mean a very rapid blink, say 30 times per second, that you can
    see if you swing your head, or if a car crosses in front of you from one
    side to the other.)  How those circuits interact with trailers I don't
    have a clue.  If the car manufacturer offers an add-on trailer adapter
    ask whether it'll work with LED lights in the trailer.



    On 6/29/2022 11:25 AM, Dan Marotta wrote:
    I love it!  If the car can't recognize the low voltage drop of the
    LED, insert a resistor in series.  That way the power that was
    converted to heat in the incandescent bulb is now converted to heat in
    a resistor!

    Another win for green power!

    Yeah, I know about older and newer cars.  It was a joke.  Deal with it.

    Dan
    5J

    On 6/29/22 09:06, kevin anderson wrote:
    On Wednesday, June 29, 2022 at 10:54:28 AM UTC-4, Hank Nixon wrote:
    On Tuesday, June 28, 2022 at 2:12:05 PM UTC-4, david.s....@gmail.com
    wrote:
    I have a Cobra trailer that was manufactured in 1981. It has the
    old, round tailights that have a red lens with an amber rectangle
    in the center. The tailight was originally manufactured by a
    company named VLO.


    I was able to use the lens out go the one below  for a lens missing
    on my 1985 Cobra trailer.    $6.54 delivered to the house, and it was >>> a 30 second job instead of all the rewiring.  Also, if it does not
    fit, when free return if you are Amazon Prime member.  I still have
    the remaining parts if something goes wrong in the future.

    https://www.amazon.com/gp/product/B0045LXHUA/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1


    Kevin
    92


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