How to manually control the FAD

Renegade

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Is anybody confident that there won’t be any long term issues with having a fad electronically disconnected? I understand there is a fork that slides a collar back and forth. Just a little concerned if it might move around if “disconnected”. No idea if there is a real reason for concern.

I use the tazer now, but it is pretty cumbersome. It would be cool if I could use one of the aux switches.
It’s got a spring which holds the fork in the open position when not engaged. It uses an electromagnetic field when engaged to override the spring and lock the collar. There’s a FAD wiring harness on eBay for $36 if someone wants to try that. I’m tempted, but I don’t have a Tazer...





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HomesteadRubi

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My dad installed the BD 2 Low harness in his 2019 RAM 3500 so he can back his 5th wheel up in 2wd low. His truck has the fad. I just looked up the install of this harness and the transfer case control module looks very similar to the JL module on Moparfactoryparts.com. Might be able to make something similar to the BD 2 Low harness, or maybe even use or modify the harness to work. Here are the links to the harness install and the JL module I’m referring to.
http://www.trucktrend.com/how-to/towing/1703-how-to-install-a-bd-2-low-unlock-kit-in-ram-3500

https://www.moparfactoryparts.com/o...hb0sXtddACcmaJIEx3PNkmCsqUopHewQaAnOoEALw_wcB
 

twisty

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THis isnt useful just for backing up for a trailer. In Moab where the traction is crazy good 2wd low is VERY useful there. Keeps things from binding up when you dont need 4wd but still want to be in low.

If this is figured out I'd be in for sure. It would save me from going Atlas.
 

Renegade

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It’s got a spring which holds the fork in the open position when not engaged. It uses an electromagnetic field when engaged to override the spring and lock the collar.
My dad installed the BD 2 Low harness in his 2019 RAM 3500 so he can back his 5th wheel up in 2wd low. His truck has the fad. I just looked up the install of this harness and the transfer case control module looks very similar to the JL module on Moparfactoryparts.com. Might be able to make something similar to the BD 2 Low harness, or maybe even use or modify the harness to work. Here are the links to the harness install and the JL module I’m referring to.
http://www.trucktrend.com/how-to/towing/1703-how-to-install-a-bd-2-low-unlock-kit-in-ram-3500

https://www.moparfactoryparts.com/o...hb0sXtddACcmaJIEx3PNkmCsqUopHewQaAnOoEALw_wcB
Thanks. I just emailed them to see if they might be compatible.
 
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mazeppa

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My dad installed the BD 2 Low harness in his 2019 RAM 3500 so he can back his 5th wheel up in 2wd low. His truck has the fad. I just looked up the install of this harness and the transfer case control module looks very similar to the JL module on Moparfactoryparts.com. Might be able to make something similar to the BD 2 Low harness, or maybe even use or modify the harness to work. Here are the links to the harness install and the JL module I’m referring to.
http://www.trucktrend.com/how-to/towing/1703-how-to-install-a-bd-2-low-unlock-kit-in-ram-3500

https://www.moparfactoryparts.com/o...hb0sXtddACcmaJIEx3PNkmCsqUopHewQaAnOoEALw_wcB

You might be onto something, both the female plug ports on the Jeep and Ram transfer case modules appear to be the same, they may function the same (?), but different part numbers and a cost difference.


Jeep transfer case module MOPAR up to 2020 models
MOPAR # 68416517AA 68416518AA, 68416519AA, & 68416520AA

Ram 68416518AA.png

s-l1600.jpg



Ram transfer case module MOPAR # 68250127AC up to 2021 models

Jeep 68250127ACpng.png


130677009.jpg
 
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mazeppa

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Anybody know where he Jeep transfer case module is located? I'm assuming under the dash or by the BCM.
 

Renegade

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Please keep us informed.
Here’s what I got back from them:
Our 1030705 kit has been tested on the Dodge pick up line only as that is out target market. You could talked to your Dodge dealer and see if they share the same systems, but at this time I am not aware of BD testing product for the Jeep Gladiators. I will mention the idea to our R&D thought.
 

HomesteadRubi

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Here’s what I got back from them:
Our 1030705 kit has been tested on the Dodge pick up line only as that is out target market. You could talked to your Dodge dealer and see if they share the same systems, but at this time I am not aware of BD testing product for the Jeep Gladiators. I will mention the idea to our R&D thought.
Right on! I bet it would work since it’s just a switch added inline to the factory harness. I wish I knew where this module was on our Jeep’s so I can verify wiring.
 
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mazeppa

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Right on! I bet it would work since it’s just a switch added inline to the factory harness. I wish I knew where this module was on our Jeep’s so I can verify wiring.

I have Armorlite front and rear carpet replacement kit that will be shipping soon, so I will have the right and left front door sills off on both sides when installing. If the transfer case module isn't located behind either of the sills, then the next guess is under the dasd on a JT, it's not under the hood. From the Jeep transfer case module images in my post above (first two images in post #20), it appears it mounts to a flat surface.
 

HomesteadRubi

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I have Armorlite front and rear carpet replacement kit that will be shipping soon, so I will have the right and left front door sills off on both sides when installing. If the transfer case module isn't located behind either of the sills, then the next guess is under the dasd on a JT, it's not under the hood. From the Jeep transfer case module images in my post above (first two images in post #20), it appears it mounts to a flat surface.
Found the location on the Gladiator. I remembered YouTuber’s Goonzquad rebuilt a Gladiator and removed the interior. It’s behind the back seat. Still don’t know the location on the JLU.

CF31978F-7F3E-4117-B300-876434B46576.png
 
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mazeppa

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Found the location on the Gladiator. I remembered YouTuber’s Goonzquad rebuilt a Gladiator and removed the interior. It’s behind the back seat. Still don’t know the location on the JLU.

CF31978F-7F3E-4117-B300-876434B46576.png
Good find, that appears to be a 68416518AA, all the actual images of the transfer case modules I could find (for all Jeep, Dodge, & Ram) don't use the center plug that is just a blank spot. I think this module also controls the optional lockers if your Jeep has them.

Screen Shot 2021-02-12 at 9.15.26 AM.png


see image at 6:07-6:09


On the Wranglers I believe it is the DTCM (Drive Train Control Module)
Screen Shot 2021-02-12 at 9.33.39 AM.png


https://www.jlwranglerforums.com/JL-Wiring-Diagrams/CAN-C-BUS-LAYOUT.pdf
 

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