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Not the factory one. It will have to be an aftermarket one or else you will be doing a lot of splicing and it then could throw a code at you.
Correct me if I'm wrong...and I certainly could be...but isn't one of the plugs on the factory controller just a standard 4-pin connector that controls the normal trailer brake functions? If you just use this conventional 4-pin connector, the trailer brake functions will operate, but you won't get any display in your EVIC. I thought about going this route, but since I don't have EVIC, I could save money and get some better display functions with a high end aftermarket controller...in my case a Tekonsha P3. Since I was able to mount my controller in the existing plate for the OEM controller, I was happy with the final outcome. My P3 came with a factory harness adapter with that 4-pin connector under my truck's dash. I thought the OEM controller will plug into that same 4-pin connector and operate like a normal brake controller...just without EVIC readout. This would be good to know for sure for others considering the OEM controller who don't have EVIC. Does the OEM controller at least have some minimum display or lights like a basic aftermarket controller for basic operation?
 

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Not the factory one. It will have to be an aftermarket one or else you will be doing a lot of splicing and it then could throw a code at you.
All he needs to do to add the factory controller is add the second connector, which requires splicing 3 wires, and get the truck flashed at the dealer. Then it'll function exactly like it was factory equipped.

Correct me if I'm wrong...and I certainly could be...but isn't one of the plugs on the factory controller just a standard 4-pin connector that controls the normal trailer brake functions? If you just use this conventional 4-pin connector, the trailer brake functions will operate, but you won't get any display in your EVIC. I thought about going this route, but since I don't have EVIC, I could save money and get some better display functions with a high end aftermarket controller...in my case a Tekonsha P3. Since I was able to mount my controller in the existing plate for the OEM controller, I was happy with the final outcome. My P3 came with a factory harness adapter with that 4-pin connector under my truck's dash. I thought the OEM controller will plug into that same 4-pin connector and operate like a normal brake controller...just without EVIC readout. This would be good to know for sure for others considering the OEM controller who don't have EVIC. Does the OEM controller at least have some minimum display or lights like a basic aftermarket controller for basic operation?
The factory controller won't work with just one connector. It won't even power up. But the EVIC is not required for the controller to work. Even if you don't have the EVIC, getting the truck flashed is recommended, so the computer won't register a hidden error that there's an unrecognized canbus device on the network.
 

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All he needs to do to add the factory controller is add the second connector, which requires splicing 3 wires, and get the truck flashed at the dealer. Then it'll function exactly like it was factory equipped.



The factory controller won't work with just one connector. It won't even power up. But the EVIC is not required for the controller to work. Even if you don't have the EVIC, getting the truck flashed is recommended, so the computer won't register a hidden error that there's an unrecognized canbus device on the network.
And I'm not disputing you, because I haven't experimented with the factory controller, but why wouldn't it power up without the connection to the other 3-pin plug? The 4-pin plug that all these trucks have has the 4 basic wires needed in all aftermarket trailer brake functions. I thought the 3-pin plug was just for displaying in the EVIC. I realize that the factory controller may be a totally different animal. Just asking, not challenging your info here.

Yes, I saw the alternate wiring issue in trucks without the supplied connector in that huge thread on the factory controller.

http://www.ramforumz.com/showthread.php?t=52410&highlight=Netman66

In that first pic of the factory controller, you can see the display and all the apparent functions that you have in an aftermarket controller. This is why I "assumed" it's a basic trailer brake controller with the ability to display in the EVIC and offer some additional bells-and-whistles in the EVIC. Notice I used the terms "assumed" and "apparent"...LOL! I would assume that the factory controller would get its power and other basic interface functions in the 4-pin connector, or otherwise how would it operate the brakes and such through the normal 7-pin rear trailer connector? And if the truck's ECM would recognnize the factory controller as an alien device when plugged into the factory supplied 4-pin trailer brake plug without being flashed, wouldn't it do the same with an aftermarket controller?

Again, not being argumentative because you may be absolutely correct, but some are saying it will work and it appears that they may have tried it. I haven't.
 

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I'm curious on this as well. I have a 09 though...the dealer won't even talk to me!

I have one plug, with a green plug right behind it...so I'm assuming mine is only a one plug system...being as its an 09 and there is no "taped up" 2nd plug. I don't want to do a bunch of cutting and splicing, but I would like the factory controller.



Do you have pics of your P3 in the factory bezel? I'd like to see that!
 

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I'm curious on this as well. I have a 09 though...the dealer won't even talk to me!

I have one plug, with a green plug right behind it...so I'm assuming mine is only a one plug system...being as its an 09 and there is no "taped up" 2nd plug. I don't want to do a bunch of cutting and splicing, but I would like the factory controller.



Do you have pics of your P3 in the factory bezel? I'd like to see that!
Here's a pic. Not as sano as the factory setup for sure, but it's clean, well-mounted, and out of the way. I can see the display and reach the buttons conveniently too. If you get an aftermarket controller that has the manual brake override slide on the face of the unit, you can get the controller even deeper into the bezel's hole. That bezel I'm using is the OEM bezel. It's possible that the factory controller bezel may be even easier to mod for an aftermarket controller. I definitely had to cut the OEM bezel's opening to mount the P3.
 

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And I'm not disputing you, because I haven't experimented with the factory controller, but why wouldn't it power up without the connection to the other 3-pin plug? The 4-pin plug that all these trucks have has the 4 basic wires needed in all aftermarket trailer brake functions. I thought the 3-pin plug was just for displaying in the EVIC. I realize that the factory controller may be a totally different animal. Just asking, not challenging your info here.

Yes, I saw the alternate wiring issue in trucks without the supplied connector in that huge thread on the factory controller.

http://www.ramforumz.com/showthread.php?t=52410&highlight=Netman66

In that first pic of the factory controller, you can see the display and all the apparent functions that you have in an aftermarket controller. This is why I "assumed" it's a basic trailer brake controller with the ability to display in the EVIC and offer some additional bells-and-whistles in the EVIC. Notice I used the terms "assumed" and "apparent"...LOL! I would assume that the factory controller would get its power and other basic interface functions in the 4-pin connector, or otherwise how would it operate the brakes and such through the normal 7-pin rear trailer connector? And if the truck's ECM would recognnize the factory controller as an alien device when plugged into the factory supplied 4-pin trailer brake plug without being flashed, wouldn't it do the same with an aftermarket controller?

Again, not being argumentative because you may be absolutely correct, but some are saying it will work and it appears that they may have tried it. I haven't.
Aftermarket controllers draw their power from the same feed that they use to control the trailer brakes themselves. From a controls standpoint, it's not ideal to have controllers and the devices they control on the same feed, but with the relative simplicity of a brake controller, it's not a big deal. The OEM controller isn't powered from the 12+VDC Trailer Tow wire, it's powered from an ignition hot wire in the second connector. The second connector also has the 2 CANBUS wires. The OEM controller won't power up without the ignition hot wire, and it won't operate until it has CANBUS communication. That's just how it was designed, there's no way around it. The controller doesn't just use CANBUS for the EVIC display, it also uses it to factor in conditions like ABS, traction control, and trailer sway control. It's integration offers a higher degree of sophistication over aftermarket controllers that just have a brake switch input and some inertial sensors. It also uses CANBUS for simple things like dimming the display when the lights are on. Some aftermarket controllers offered features not available on the OEM controller, like controls for electric-over-hydraulic brakes. The 2012 and newer controllers have added some of these features.

The trucks computer has no way of knowing if an aftermarket controller is added, because the aftermarket controllers don't use CANBUS.

I'm not basing anything I said on assumptions. I'm basing what I said on experience

http://www.ramforumz.com/showthread.php?t=95420
 

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There you go...exactly the kind of definitive info I was looking for. Like I said in the other long running mega-thread started by Netman66, it would be nice if all these brake controller threads were integrated into one location. What you're saying about the factory controller indeed makes it a very different animal...much more sophisticated. While I'm happy with a good, quality aftermarket controller, some of those additional features you mention are impressive...apparently much more than just an EVIC readout. Thanks for the info.
 

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I had the integrated controller added to my truck by the dealer. Only had the single connector. Service guy said he had to order a complete new wiring harness, which he showed me when it came in, at $750. It was part of the sale, it didn't cost me anything. Not saying you cant splice it in but not through my dealer anyway.
 

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This has been my one big dissapointment with a new 2012 Ram Big Horn that I otherwise love. We were told by the salesperson that a factory controller could be added, but later found out we only have the dreaded "one plug" under the dash. I know that some have spliced in the needed wires on earlier models, but don't know if it can be done on a 2012. According to an email from a wholesale Mopar parts site, there IS a different part number for the 2012 controller, so something may be different. I hate to settle for an aftermarket controller stuffed in some awkward place, but I don't know what else to do at this point.
 

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I only had the "one plug" as well is my 2012 SLT. I already had an aftermarket controller which I had removed from the Nissan i traded in for the Ram. I decided to re-use this one since it was only 6 months old. I got a pig tail from my Dealer, which the parts guy did not even know existed, plug in the pig tail into the "single connector" and then spliced the pig-tail into my controller and voila, 5 minutes and the trailer is now under my control!!
 

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I would really like to know more about this Original Mopar controller and if it will work on the 2012 with just one plug, If anyone has any more info please let us know, I was told also it could be added after, I just did not order it yet
 

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Aftermarket Control

This has been my one big dissapointment with a new 2012 Ram Big Horn that I otherwise love. We were told by the salesperson that a factory controller could be added, but later found out we only have the dreaded "one plug" under the dash. I know that some have spliced in the needed wires on earlier models, but don't know if it can be done on a 2012. According to an email from a wholesale Mopar parts site, there IS a different part number for the 2012 controller, so something may be different. I hate to settle for an aftermarket controller stuffed in some awkward place, but I don't know what else to do at this point.
So I spent some time this week-end and just added a little aftermarket controller. My trailer is not very big, so I didn't need anything fancy, just something small enough to fit in the space. Not as clean as the factory controller, but it went in pretty clean after some improvised customization. Maybe after the newness of the truck wares off and more info is out there regarding the 2012, I'll have the guts to start cutting into that neatly wrapped up harness and start splicing. But for now, this will do.
 

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