Cobra trailer wiring diagram

[Tuno]

Is there a softcopy someone can send me? ... or any helpful reference?

The running lights on my 2002 Cobra work properly but I get strange
results with the turn signals, testing with three different tow
vehicles.

Are there any caveats I should be aware of in using 6-way-round to 4-
way-flat and 4-way-flat to 7-way-blade adapters for the trailer? (I've
never been able to find a 6-to-7 adapter. One of my tow vehicles is an
RV with 6-way round, and my trailer has 7-way blade. I've found 7-
to-6, but not 6-to-7, appropriately gendered.)

~ted/2NO

[[email protected]]

On Apr 17, 5:10 pm, Tuno > wrote:
> Is there a softcopy someone can send me? ... or any helpful reference?
>
> The running lights on my 2002 Cobra work properly but I get strange
> results with the turn signals, testing with three different tow
> vehicles.
>
> Are there any caveats I should be aware of in using 6-way-round to 4-
> way-flat and 4-way-flat to 7-way-blade adapters for the trailer? (I've
> never been able to find a 6-to-7 adapter. One of my tow vehicles is an
> RV with 6-way round, and my trailer has 7-way blade. I've found 7-
> to-6, but not 6-to-7, appropriately gendered.)
>
> ~ted/2NO

Click on "Engineering here":
http://www.cobratrailer.de/english/index.html

Best Regards, Dave

[Tim Mara]

diagrams are on cobra website http://www.cobratrailer.de/english/index.html
tim
"Tuno" > wrote in message
oups.com...
> Is there a softcopy someone can send me? ... or any helpful reference?
>
> The running lights on my 2002 Cobra work properly but I get strange
> results with the turn signals, testing with three different tow
> vehicles.
>
> Are there any caveats I should be aware of in using 6-way-round to 4-
> way-flat and 4-way-flat to 7-way-blade adapters for the trailer? (I've
> never been able to find a 6-to-7 adapter. One of my tow vehicles is an
> RV with 6-way round, and my trailer has 7-way blade. I've found 7-
> to-6, but not 6-to-7, appropriately gendered.)
>
> ~ted/2NO
>

[Mike[_8_]]

Turn signals are blinking brake lights?

Mike

On Apr 17, 10:10 am, Tuno > wrote:
> Is there a softcopy someone can send me? ... or any helpful reference?
>
> The running lights on my 2002 Cobra work properly but I get strange
> results with the turn signals, testing with three different tow
> vehicles.
>
> Are there any caveats I should be aware of in using 6-way-round to 4-
> way-flat and 4-way-flat to 7-way-blade adapters for the trailer? (I've
> never been able to find a 6-to-7 adapter. One of my tow vehicles is an
> RV with 6-way round, and my trailer has 7-way blade. I've found 7-
> to-6, but not 6-to-7, appropriately gendered.)
>
> ~ted/2NO

[Marc Ramsey]

Mike wrote:
> Turn signals are blinking brake lights?

Indeed, the first thing I do when I get hold of a Cobra trailer is take
the tail light covers off, and swap the leads (no cutting or soldering
required) for the turn and brake lights. As delivered, the brake lights
are on a common circuit, and the turn lights are amber, so you can't
get the 4-way "US standard trailer" combined red brake and turn signals
without doing this swap...

Marc

> On Apr 17, 10:10 am, Tuno > wrote:
>> Is there a softcopy someone can send me? ... or any helpful reference?
>>
>> The running lights on my 2002 Cobra work properly but I get strange
>> results with the turn signals, testing with three different tow
>> vehicles.
>>
>> Are there any caveats I should be aware of in using 6-way-round to 4-
>> way-flat and 4-way-flat to 7-way-blade adapters for the trailer? (I've
>> never been able to find a 6-to-7 adapter. One of my tow vehicles is an
>> RV with 6-way round, and my trailer has 7-way blade. I've found 7-
>> to-6, but not 6-to-7, appropriately gendered.)
>>
>> ~ted/2NO
>
>

[Tuno]

Dave,

The Cobra site has diagrams for 7-pins and 13-points. My Cobra has a 7-
pin blade connector, which according to my on-site engineer says is
wired incorrectly compared to the diagram.

Has anyone changed the Cobra 7-pin setup to a 4-pin? My last Cobra
trailer had a 4-pin flat connector. I'm wondering if I should switch
it to that.

~ted/2NO

[Tony Verhulst]

> Has anyone changed the Cobra 7-pin setup to a 4-pin? My last Cobra
> trailer had a 4-pin flat connector. I'm wondering if I should switch
> it to that.

I have done that on my Komet trailer. See
http://home.comcast.net/~verhulst/SOARING/WiringConversion.html

Tony V.

[[email protected]]

On Apr 17, 10:14 pm, Tuno > wrote:
> Dave,
>
> The Cobra site has diagrams for 7-pins and 13-points. My Cobra has a 7-
> pin blade connector, which according to my on-site engineer says is
> wired incorrectly compared to the diagram.
>
> Has anyone changed the Cobra 7-pin setup to a 4-pin? My last Cobra
> trailer had a 4-pin flat connector. I'm wondering if I should switch
> it to that.
>
> ~ted/2NO

Ted - The Cobra trailer can be ordered with the European standard
connector (big round connector with big round pins), or a USA RV
common trailer connector (blade pins, round connector). Perhaps
yours is the latter ? Is this trailer as new or has it been rewired ?

See ya, Dave

[Rick Fuller]

FYI: You can purchase a 7-to-4 pin adapter at auto
and RV supply stores. If you have a 7-pin female electrical
plug on your car, this will convert it to the American
4-pin plug on many trailers.
Rick

At 06:42 18 April 2007, wrote:
>On Apr 17, 10:14 pm, Tuno wrote:
>> Dave,
>>
>> The Cobra site has diagrams for 7-pins and 13-points.
>>My Cobra has a 7-
>> pin blade connector, which according to my on-site
>>engineer says is
>> wired incorrectly compared to the diagram.
>>
>> Has anyone changed the Cobra 7-pin setup to a 4-pin?
>>My last Cobra
>> trailer had a 4-pin flat connector. I'm wondering
>>if I should switch
>> it to that.
>>
>> ~ted/2NO
>
>Ted - The Cobra trailer can be ordered with the European
>standard
>connector (big round connector with big round pins),
>or a USA RV
>common trailer connector (blade pins, round connector).
>Perhaps
>yours is the latter ? Is this trailer as new or has
>it been rewired ?
>
>See ya, Dave
>
>

[Rick Fuller]

FYI: You can purchase a 7-to-4 pin adapter at auto
and RV supply stores. If you have a 7-pin female electrical
plug on your car, this will convert it to the American
4-pin plug on many trailers.
Rick

At 06:42 18 April 2007, wrote:
>On Apr 17, 10:14 pm, Tuno wrote:
>> Dave,
>>
>> The Cobra site has diagrams for 7-pins and 13-points.
>>My Cobra has a 7-
>> pin blade connector, which according to my on-site
>>engineer says is
>> wired incorrectly compared to the diagram.
>>
>> Has anyone changed the Cobra 7-pin setup to a 4-pin?
>>My last Cobra
>> trailer had a 4-pin flat connector. I'm wondering
>>if I should switch
>> it to that.
>>
>> ~ted/2NO
>
>Ted - The Cobra trailer can be ordered with the European
>standard
>connector (big round connector with big round pins),
>or a USA RV
>common trailer connector (blade pins, round connector).
>Perhaps
>yours is the latter ? Is this trailer as new or has
>it been rewired ?
>
>See ya, Dave
>
>

[Rick Fuller]

FYI: You can purchase a 7-to-4 pin adapter at auto
and RV supply stores. If you have a 7-pin female electrical
plug on your car, this will convert it to the American
4-pin plug on many trailers.
Rick

At 06:42 18 April 2007, wrote:
>On Apr 17, 10:14 pm, Tuno wrote:
>> Dave,
>>
>> The Cobra site has diagrams for 7-pins and 13-points.
>>My Cobra has a 7-
>> pin blade connector, which according to my on-site
>>engineer says is
>> wired incorrectly compared to the diagram.
>>
>> Has anyone changed the Cobra 7-pin setup to a 4-pin?
>>My last Cobra
>> trailer had a 4-pin flat connector. I'm wondering
>>if I should switch
>> it to that.
>>
>> ~ted/2NO
>
>Ted - The Cobra trailer can be ordered with the European
>standard
>connector (big round connector with big round pins),
>or a USA RV
>common trailer connector (blade pins, round connector).
>Perhaps
>yours is the latter ? Is this trailer as new or has
>it been rewired ?
>
>See ya, Dave
>
>

[Tuno]

Dave, it's the latter, it came with a "7-way blade" which is round.
I'm the second owner and the first tells me he made no modifications.

However my on-site engineer (who goes by "Dad") sent me the following
report this morning:

<snip>
The problem I had this morning was with the 7/4-pin adapter. That
sucker did not have the common wire connected thru from the 4-pin plug
to the 7-pin plug. Ordinarily that should not be a problem PROVIDED
the trailer is physically hitched to the tow car--the system uses
chassis metal for the common return. But I did not have a physical
connection this morning, only the electrical connection. This evening,
when I jumpered the common lead through from the 4-pin to the 7-pin,
everything worked like the factory said it should (but not like that
wiring diagram you found on the net this morning). The upper (amber)
lamp is the turn signal, the middle (red) lamp is the brake, and the
lower (red) is the tail light.

So I made the change that Mac described. Removed the lead from the
brake lamp and taped it off. Switched the lead from the turn lamp to
the brake lamp (in the 4-pin system, that serves as both brake and
turn signal). Then I gave it a full test. Tail only, tail and turn,
brake only, brake and turn, and brake, tail, and turn. Everyting now
works like it should in a 4-pin setup with my van.
</snip>

Thanks to everyone for the feedback on this topic. I'll be prepared
for the new trailer this summer!

2NO

[Tuno]

> FYI: You can purchase a 7-to-4 pin adapter at auto
> and RV supply stores. If you have a 7-pin female electrical
> plug on your car, this will convert it to the American
> 4-pin plug on many trailers.

I use two tow vehicles -- a Toyota pickup for some weekends and an RV
for others. The pickup has both 7-way blade and 4-way flat. The RV has
6-way round (that's with one in the center). A problem I had (until
yesterday) was I could not find a 6-way to 7-way adapter, only 7-way
to 6-way (which of course are backwards gendered), so when pulling
with the RV I had to use a 6-to-4 and a 4-to-7, which looked like
something Rube Goldberg put together. As my engineer reported in my
earlier post, there was a problem with the 4-to-7 adapter. He fixed
that, and did the rewiring that Marc suggested, now everything works
-- with his van at least.

2NO