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Old 06-27-2016, 10:35 PM   #1
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Best wiring harness for 2015 Wrangler Unlmtd

I read a couple of older threads, but wanted to get some updated info on this. What is the best/easiest-to-install/user-friendly wiring harness for my late model Wrangler? Have seen many options (Cool Tech, Hopkins, E-trailer, Mopar)? I would really like something where I don't have to pull the brake fuse every time I tow. Low maintenance is key. Please let me know what you've used and why its the best option. Thanks!!!
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Old 06-28-2016, 09:00 AM   #2
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Dont know if its the best but i used a Hopkins and it was and is quite easy.
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Old 06-28-2016, 09:12 AM   #3
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I used the MOPAR, if I were going to do it again I would still use it but modify the install.

There is or at least on our 2012 a preexisting hole on the firewall next to the master cylinder... I would cut and lengthen the harness running under the dash and out that hole. No need to pull the right fender and cut anymore holes in the firewall. Pulling the fender also requires new clips, (bad design)

I found this once I already had mine installed. Jeep doesn't always do things in the best way or the eaziest.
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Old 06-29-2016, 03:20 PM   #4
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I used the Mopar Harness. The under the dash connections were not fun, but it was a clean install. I suggest that you look up FL Steves and LT Dans posts. They will save you time and frustration, especially removing the glove box and speaker. I would go ahead and remove the front fender. I did and didn't have any issues with the various clips, the ones stayed on the Jeep and I just removed them and put them back on the fender. There is a forked shaped tool to remove the round buttons that your local auto parts store should have and that will probably keep you from damaging the buttons.


I will warn you that the 1 1/8 hole that Jeep calls for will not work. Most on the forum used 1 3/8. That may be ok, but all I had was a 1 1/2 metal hole saw and used that...worked great. Make sure you have some silicone clear sealant for the plug, small tube is just fine.


I spent the most time one the connections under the dash. Yes, I probably should have pulled the seat, but didn't. Once I got done my neighbor had a tow package on his Dodge truck and I could hook the Jeep/Mopar Harness up to that to test.


Another note, your Motorhome will need 12 VDC on the pin 4 of the receptacle. There were several posts to that issue for those that could not get the harness to work.


Now, after I got done I found out about another harness that could be a lot easier to install. This is the "Tow Daddy Plug-N-Tow system". Google it for details. I am fairly sure I would go this way if I had to do it again. You can also see this site, Wrangler Towing Upgrades for a very good article by Mark Quasius on setting up the Jeep.


Hope this helps.


Jim
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Old 06-29-2016, 04:36 PM   #5
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I agree with Jim on the 1-1/2" hole. I drilled a 1-3/8" as some recommended and getting the rubber grommet in that smaller hole was a real PITA.

Here is a link to the article Jim referred to:
2012 Jeep Mopar Harness Installation Update
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Old 06-29-2016, 05:28 PM   #6
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I used the mopar last month and with the advice of the threads mentioned above the install was the easiest part of getting my Jeep ready to be towed. The braking system and tow bar took much more time to install for sure. Very happy with the mopar harness.
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Old 06-30-2016, 05:43 PM   #7
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I have the mopar wiring harness and have been very happy. I am lazy so I had my Jeep dealer install it, I believe they charged for about 1 hour of labor. I also thought this would limit any warranty issues, even Jeeps have lots of electronics, this way if there was a problem I could just take it back to the dealer and have it fixed under the warranty.
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Old 07-01-2016, 02:54 AM   #8
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You have a great Jeep dealer. Mine wanted 4 hours and the cost would have been around 480.00. For that amount I can lay on my back for an hour to work with the damn connectors.


rg
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Old 07-01-2016, 09:50 AM   #9
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I also went with Hopkins and it was super easy to install!
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Old 07-01-2016, 05:52 PM   #10
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I looked up towdaddy.com and it routed me to Hopkins' site. Did Hopkins buy Towdaddy? Or were they always affiliated? Anyway, I think I'm willing to go this route. Now if I can just find out which one I need.
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Old 07-01-2016, 05:56 PM   #11
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I went with CoolTech LLC. Probably the simplest, least invasive installation of all the different options.
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Old 07-01-2016, 06:00 PM   #12
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Quote:
Originally Posted by DisFanatic View Post
I also went with Hopkins and it was super easy to install!
Dis,
Which Hopkins kit did you use? I've seen #42635 and #56200 that both supposedly fit my 2015 JKU, but they look quite different in the pictures. Which one did you use? Do you know the difference?
Thanks!!!
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Old 07-01-2016, 07:04 PM   #13
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I bought it from E-Trailer: http://www.etrailer.com/Tow-Bar-Wiri...id=20161351068
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Old 07-02-2016, 10:47 AM   #14
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Roamin Mike,


Google and check out this harness Tow Daddy Plug-N-Tow system. I also have an earlier post with a link to a site about installing on the Jeep.


I used the Mopar harness, but would have seriously considered the Tow Daddy Plug-N-Tow system had I know about it. Main benefit I see is that there are no splices to make or bulbs to add.
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