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Trailer harness

Old Aug 18, 2017 | 11:10 AM
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Default Trailer harness

My 04 Disco2 trailer harness is not in the right/passenger side tail light(U.S model). Not in the left one either.
I looked underneathe, and there it is on the driver side, without enough slack to have came from the tail light either. Seems factory, as no wires are hacked.
I just thought it was strange, because everything I've read says it should have came factory inside the passenger tail light.
Is there anywhere to buy a harness to connect to a standard 4 pin trailer harness, without electric brakes?
The couple of harnesses I have seen are $100-$120!
And it didn't specify if they had electric brakes, and if so, if they came with the adapter to the 4 pin.
I know LR parts are expensive, but $100+ for a wiring harness is ridiculous. I don't want to cut/splice anything either if at all possible, just plug it in and go.
I'll only be pulling a 4'x6' open trailer with a 4wheeler or mower on rare occasion.
Does anyone have any advice on what or where to buy?
Thank you

Trying to load pictures now
 
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Old Aug 18, 2017 | 11:14 AM
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Left/driver side rear
 
Attached Thumbnails Trailer harness-20170815_194418.jpg   Trailer harness-20170815_194455.jpg  
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Old Aug 18, 2017 | 11:17 AM
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.....
 
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Old Aug 18, 2017 | 03:11 PM
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I just read where the plug I have in the pictures above is actually for a rear parking distance sensor, an option my 04 SE doesn't have.
But, there is still no extra plug or harness inside/behind either tail light. Only the factory harness coming through the body, and going only to tail light bulb sockets.
Nothing elses.
 
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Old Aug 18, 2017 | 04:46 PM
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This is what I did years ago to get a 4 pin trailer harness.

Go here
https://discoweb.org/oldsite/

Select "tech" at the top of the page.

Than scroll down on the left side to "Trailer Wire disco2".

https://www.amazon.com/Hopkins-46155-Taillight-Converter-Universal/dp/B0002Q8036 https://www.amazon.com/Hopkins-46155-Taillight-Converter-Universal/dp/B0002Q8036
 

Last edited by BackInA88; Aug 18, 2017 at 04:49 PM.
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Old Aug 18, 2017 | 06:30 PM
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I've wired universal trailer boxes before.
I'm trying to avoid cutting and splicing anything though.
Mine has no factory harness behind the tail light either, makes no sense.
 
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Old Aug 19, 2017 | 05:28 AM
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Try this

How To Install A Trailer Wire On A Discovery 2
 
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Old Aug 19, 2017 | 08:16 AM
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I did this last weekend. My trailer wiring was behind the right tail light. I cut and spliced four wires for the harness.

Ground: Black
Left Turn Signal: Green With Red Stripe
Marker or run lights: Red with Black Stripe or Red with Orange Stripe
Right Turn signal: Green with light blue stripe
Brake: Green with Purple stripe




I just used a generic 4 flat connector like:
https://www.etrailer.com/Wiring/Hopkins/HM48110.html

I think it was $7 at oreillys.

Uhaul allowed it, worked for brake lights and turn signals.
 
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Old Aug 19, 2017 | 01:45 PM
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If you connected five wires to a four-wire plug, won't you be shorting your turn signals across each other when you have a trailer connected?
 
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Old Aug 19, 2017 | 04:11 PM
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Originally Posted by mollusc
If you connected five wires to a four-wire plug, won't you be shorting your turn signals across each other when you have a trailer connected?
You're correct, I didn't connect the marker/run lights. I copied that from another thread I was looking at
 
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