Question about 2004 Dodge Ram 1500

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Trailer wiring harness diagrams W/o internet goose chase

Am probing the wires on a 1500 ram slt with tow package to hookup a trailer , it appears that the trailer wiring harness runs all the way down the frame to a junction box ,the wires don't just come off the tailights like others ,what I need is a good wiring diagram that tells me what color wires are what as the tail lamps etc seem to have different colors than the truck trailer harness , I have no marker lights at all and it looks like the markers are black/yellow stripe on the tail lights , but are different on the trailer harness please help ...Internet my But ...seems like when you type something in it leads you on a useless goose chase thanxz Ben

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Try this Link www.dodgeram.org/tech/mods/electric/trailer_wire.htm

Posted on Jul 10, 2009

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Try http://www.etrailer.com/faq-wiring.aspx. This should help. Mike

Posted on Sep 30, 2009

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1 Answer

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You'll need to disconnect the wires from either the truck connector or the trailer connector...
I highly suggest purchasing a voltage checker- it looks like a screwdriver with a pigtail of wire with an alligator clip on the end. The tip of the 'screwdriver' has a point for probing. The light in the probe will light up...makes it easy to trouble shoot without a helper behind the trailer.
Hook the aligator clip to a good positive grounding point on the bumper or frame(not painted).
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Then i'd suggest, taking the connector off of your trailer, exposing the wire ends.
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then simply attach your trailer wires according to your diagram to the terminals in the connector... that should get you in business..
hope that makes sense...
That way if the factory wiring harness remains the same, you'll be able to use it with other trailers if the need arises..

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If you have amber signal lights & red brake lights, it's 2 separate circuits. You'll need to buy a small converter that you wire into harness to correct that. Not expensive, try autoparts store or RV/trailer sales, should have them.

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Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
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Hope this helps
Farrout!

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