The black at the controller plug is different than the black at the 7 way connection on the rear of the vehicle.
The controller needs constant 12v+ then uses that to send modulated power to the brakes via the blue wire.
I forgot to add...
If you are using the trailer wire kit, you will NOT need this harness. The brake control will be installed with the bare wire harness it comes with. Black to Constant Batt+ (circuit breaker protected at 20 or 30a depending on controller), White to Ground, Blue to your blue...
This harness is ONLY for the JLs with the factory tow package. There is a plug in the area above the location of a conventional parking brake pedal.
Swap the black and blue wires at the vehicle side connector on the 3024 harness. The controller side of the 3024 harness can then be plugged...
I feel like there is a misunderstanding. The 3014 harness is indeed wired correctly for our JL's. The problem with the 3014 is the exemption of a diode on the brake signal wire.
The 3024 harness has the diode, but is wired incorrectly. The black and blue wire positions need to be flipped...
The issue has been occurring when using the manual lever on the controller. We do not install many P3 controllers - it is feature rich and may have an option in the menus to disable lamp illumination with manual brake activation.
Most brake controllers will send voltage out the brake sense...
I will see what I can find. If I cant figure it out, worse case, you could install a 3rd brake light converter for a truck topper off of the left and right turn signal wires at the trailer plug, then run the "brake light" wire up to the brake control signal wire...
what harness are you referring to? the 3014?
it is possible that Chrysler added some protection into the circuitry to protect the computer when being back fed from the controller. In 2013-2014 the RAM half tons would cook the computer and it would have to be replaced.
I feel that if you have...
I haven't had a JL in our shop yet besides mine with a tow package. I will do a bit of homework and see if I can find enough info to confirm an install method. The ONLY hurdle that I anticipate is getting that brake signal... The rest of the install could be done on anything from a...
Don't know if you got to your install yet, if you have the factory tow package - most are recommending a tekonsha 3014 harness. It is not listed to work with the new JL and can cause issues or damage to your jeeps computer. I just did a nice write-up on the correct harness and a modification...
that 3014 harness can cause all kinds of error codes and dash lights... it is missing a diode to protect the computer. I just posted a write-up on how to make it work the way it was intended. Sorry for hijacking - Just trying to save some Jeeps...
This setup will work until you use the manual override lever on the bottom of the controller to activate the trailer brakes. I just posted a thorough write-up on the problem with the 3014 harness that you used and what you can do to prevent all of the dash lights and fault codes that others on...
THE DEFINITIVE SOLUTION to install brake control WITHOUT dash error lights
To add a bit of credibility - I am a RVDA Certified Technician (camper mechanic) and work at the largest RV dealer in central Wisconsin. We install a TON of brake controls, and I have a strong electrical background and...