trailer 7 pin wiring 2006 3500

[jerrydavis]

i tapped into the factory trailer 7 pin wiring for both a goose neck trailer plug and for a 7 pin plug(less brake wire) for a slide in camper. the camper power wire is run to a battery isolator and the ground wire is run to the battery negative. the back up lights and outside running lights work ok on all plugs. i am having trouble with both the brake and turn signal lights on all plugs. all fuses, wire taps and new wires are ok. any ideas on what to check next???? :--)

 

[Wiredawg]

Might not be picking up the ground or you might be miswired at the plug? Take a multi-meter or 12V circuit tester and check turn/brake light battery and ground first at the truck connector then in the connectors you plug in.



Hope this helps, Wiredawg

 

[fireman717]

There was a link about trailer wiring trouble on the 2006's I cannot find it right now but I think the title was about 2006 fuse box. It talks about a new wiring system for the 06's. Let me know what you find I will be wiring my 06 for a fifth wheel soon.

 

[Bob4x4]

i tapped into the factory trailer 7 pin wiring for both a goose neck trailer plug and for a 7 pin plug(less brake wire) for a slide in camper. the camper power wire is run to a battery isolator and the ground wire is run to the battery negative. the back up lights and outside running lights work ok on all plugs. i am having trouble with both the brake and turn signal lights on all plugs. all fuses, wire taps and new wires are ok. any ideas on what to check next???? :--)

Bad idea... ... ... . the 06 is all electronic. You have probably damaged the ITPM it is about $300 warranty cost. Since you have tampered with your wiring it may not be covered



Bob

 

[fireman717]

curious how are we supposed to wire our fifth wheels,the 't' connectors I have found do not cover a power wire. I have heard of what happened to jerrydavis happening alot on the 2006

 

[klenger]

Here's a link to the wiring for the 2004 models. I assume that it has not changed. http://www.klenger.net/dodge/7-pin-connector-installation/index.html



Reese has a "T" connector that fits the 10 pin rect. plug on the back of the 7 pin plug. Looks like a great solution to the problem. It wasn't available when I did mine, so I used a different solution.

 

[TowPro]

Fireman, I bought a "T" (reese 15381) that connects into the factory trailer tow harness giving me a 4 pin output. I will wire that 4 pin to a 7pin that I mount in the bed. For Battery feed and Brake I am tempted to splice into the harness in the back at the factory 7 pin connector



I could run the battery feed up to the front but my feelings are the truck already has a towing package, it is already wired to handle the load of the trailer lights, battery and brakes and I am using a T that connects into the factory towing harness (not factory light harness). I see no reason this would cause problems.



I did see where if you don't have the factory trailer tow package you have to buy a module that uses the factory lights to power an internal relay, moving the trailer load to a battery wire.



Someday I might get to hook it up

curious how are we supposed to wire our fifth wheels,the 't' connectors I have found do not cover a power wire. I have heard of what happened to jerrydavis happening alot on the 2006

 

[Bob4x4]

Here's a link to the wiring for the 2004 models. I assume that it has not changed. http://www.klenger.net/dodge/7-pin-connector-installation/index.html



Reese has a "T" connector that fits the 10 pin rect. plug on the back of the 7 pin plug. Looks like a great solution to the problem. It wasn't available when I did mine, so I used a different solution.

You know what *** u me means right???? :-laf The 06 is a totaly diferent system. You don't replace a fuse or flasher anymore when you make a mistake you buy a module



Bob

 

[TowPro]

click here for the 06 QC trailer tow wiring diagrams. As Bob is saying its all run by the "Module-Totally intergraded power. You can see that if you already have the trailer tow package, there are outputs from this module for just the trailer connectors. Both the 4 pin and 7 pin are spliced to the same outputs. I feel there should be no problems if you splice these same wires (not the true brake/tail wires) and connect them to the added 7 pin connector in the bed.



Does Dodge sell an adaptor for putting an additional 7 pin connector in the bed? (like Chevy does)



Tomorrow I will call the parts person. If they have one, that would be the best route to go so they could not a point finger as you if something frys. I will look at the "T" I have tonight (its still sitting in a box), I think it T's into the connector on the back of the factory 7 pin connector

 

[MCrossley]

the trialer tow package has been controlled by the FCM for some time now that is not new on the 06; the outputs are still fused if there is aproblem it should not fail the Controll module unless serious miswiring was done. On my 05 I have made splices into the lines without any problems.

 

[TowPro]

I just checked the Reese Adaptor 15381 I bought. You have to unplug the factory wire harness off of the factory 7 pin adaptor, then plug this in to the harness then plug this into the factory 7 pin adaptor (in other words, it T's into the connector)



This adaptor still connects through all 7 wires to the factory trailer plug. but it only has a 4 pin adaptor (about 3' long" coming out of the T). The adaptor is around 4" long between the 2 connectors that attach to the factory wire harness, I will probably splice into the extra wires I need (brake, charge, reverse) for my 7 pin harness that goes in the bed.



Compare the wire diagram I posted above for the 06 to this one for the 05. The 05 shows relays for all the trailer tow wires where the 06 don't. Maybe they are still there, but I used to work for the company that draws these diagrams, if they were the same they would have used last years drawings! I have a buddy that still works there, I think I will go call him on the radio and see if he can look it up.



I also notice the 06 don't have fuses on the outputs from the module to the left and right turn wires Maybe putting fuses in line to the trailer harness on these 2 circuits would stop blowing out the module

 

[klenger]

I just checked the Reese Adaptor 15381 I bought.

Yep, that's the part I was referring to. I need to add that part number to my web page.



I fail to see how splicing into the seven wires and connecting to another 7 pin plug in the bed of the truck could do any damage to anything, assuming the wires are connected correctly.

 

[TowPro]

I fail to see how splicing into the seven wires and connecting to another 7 pin plug in the bed of the truck could do any damage to anything, assuming the wires are connected correctly.

I agree, but I do hate to see the turn signal circuit not protected by a fuse as shown on the 06 drawings. I emailed by buddy that works for the place that drew the drawings.

 

[kblranch]

What would be nice is if Reese made a "T" that had the 7 wires coming out to make a splice for goosenecks ect. I think I will try and send them an email about this.

 

[Okie-Go]

I had my truck wired last week for the 5er and gooseneck. I'll be hooking it up tomorrow to see if everything is right. The guy that did it said it would. I'll be pulling the gooseneck for the first time, can't wait to see how the 06 handles the 25ft. trailer.

 

[TowPro]

Just checked with the Dodge parts dept. They sell an adaptor that sounds just like the Reese one, plugs into factory harness, only has 4 wires out.

 

[FLiatsis]

I have a 2004. 5 3500 srw with a towing package. I also have a 5 ton dump trailer and a 2 horse plus tack room trailer. the problem I had was all my lights and electric brake would work fine however my 12 volt trailer battery kept blowing a fuse. Two different dodge dealers had truck and trailer for two days and could not find the problem. My horse trailer dealership fixed the problemin one hour by replacing the factory 7-prong reciever. thats dodge service for ya. :--) :--)

 

[TowPro]

Heard back from my friend who works for the company that made the actual drawings.



He said the 06 drawings don't show the relays (like the 05 does) because they are intergraded into the power module and not servicable. Relay goes bad they just replace the whole module!



He also says the factory tow harness is the only one you want to tap into. Tap into the tail light harness and your going to blow the power module sooner or later. I guess in the olden days the wire that came back to the taillights also ran the trailer harness, now its a complete different circuit from the power module all the way back.



It looks like fuse 26 protects the brake light section of the module. Power goes through the fuse, to the brake switch then back into the brake section of the module, then 1 set of wires goes out to the trailer tow, and 1 set of wires goes out to the tail lights. I guess if you short out a trailer tow brake wire (or tail lights), fuse 26 should blow if the brake section of the module can handle the load.



the way we have heard several people saying they lost turn signals after installing trailer wiring makes me think something in the brake module section of the power module blows out before fuse 26 does. Maybe a TSB saying to replace fuse 26 with a 10amp is in order?



I think I am going to put inline fuses on the wires for both the Left and Right turn/brake wires in the trailer tow harness before I wire anything.



Hope this helps

 

[JLehman]

any word back from reese?

 

[tschidas]

06 Intergrated Power Module

I just had my 06 at the Dealer due to no driver side front turn signal, thought it was the bulb, wasn't, only to get a quick education on the circuitry, no more fuses and flasher my boys, anyway assumed it had something to do with plow installation and maybe excess load, etc. and figured I blew out the board (driver) so brought it in. End result the dealer, reset the codes, which I guess I had plenty stored due to plow and that recovered the circuit. Scary! I plan to fuse independently anything I add if not already relay isolated or fused. Board isn't cheap and Dealer wrote it up as a "goodwell" repair, although I would quickly remind him of my 35K goodwill a couple months ago!