Mojave front locker using Rubicon switch.

[outdoor.adventures]

I added an Eaton E-locker and a factory rubicon switch. I have the Z-auto sensor bypass adapter and a Tazer. I'm trying to figure out if I have a wiring issue or a mechanical one. My switch works as it should locks rear only or both Front/rear. The Off Road pages display shows them as locked or unlocked, but my front locker is not engaging. Rear locker functions normal, but also has a Z-auto sensor bypass adapter. No errors are displayed.
Any suggestions on what to check?

I'd check the connections/current/signal between the z-auto adapter and the locker.

Since the vehicle is showing the front as locked, this indicates the z-auto adapter is receiving the right signal from the vehicle, as well as sending a signal back to the vehicle. The only thing remaining is that the locker isn't actually locking, so something between (and including) the z-auto adapter and the e-locker isn't working right.

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[Temperance]

I'd check the connections/current/signal between the z-auto adapter and the locker.

Since the vehicle is showing the front as locked, this indicates the z-auto adapter is receiving the right signal from the vehicle, as well as sending a signal back to the vehicle. The only thing remaining is that the locker isn't actually locking, so something between (and including) the z-auto adapter and the e-locker isn't working right.

This is exactly what I would have said. Are you certain that the front locker isn't engaging? Sometimes it takes a few wheel rotations before the differential locker engages.

 

[outdoor.adventures]

@Temperance, question about your website description of your ALCM:

When the pressure drops below 80 psi it will show in the console as unlocked. When the pressure increases to 120 psi or above it will show as locked.

I have a friend who instead of the ARB Twin (CKMTA12) has the ARB Single (CKMA12) compressor, which has a maximum of 100psi instead of 150psi.

For this setup, would you recommend a pressure switch that is ON at 90psi/OFF at 120psi, like this? Or what range do you recommend?

What range threshold ON/OFF is the switch that you sold?

 

[Temperance]

@Temperance, question about your website description of your ALCM:

I have a friend who instead of the ARB Twin (CKMTA12) has the ARB Single (CKMA12) compressor, which has a maximum of 100psi instead of 150psi.

For this setup, would you recommend a pressure switch that is ON at 90psi/OFF at 120psi, like this? Or what range do you recommend?

What range threshold ON/OFF is the switch that you sold?

You'll need to find a 50-70 psi or something close to that. They aren't as common, but are still available.

 

[Jimb11563]

@Temprance are you still making and selling harnesses?

 

[Temperance]

@Temprance are you still making and selling harnesses?

Negative

 

[outdoor.adventures]

Negative

Are you going to open source it?

 

[Temperance]

Are you going to open source it?

That's the plan, but I've been busy lately. I'll move it to the top of my priorities.

 

[JohnQ]

This is exactly what I would have said. Are you certain that the front locker isn't engaging? Sometimes it takes a few wheel rotations before the differential locker engages.

The only issue I had is one of my locker pins was not pushed in far enough to lock on the plug. Front Locker works great now! Thank you Temperance.

 

[Temperance]

The only issue I had is one of my locker pins was not pushed in far enough to lock on the plug. Front Locker works great now! Thank you Temperance.

Yay! Glad it's working now!

 

[FL Robert]

I would love to get that harness...or build one.

 

[Knightcrawler]

So just to clarify…. If I get a Eaton Elocker, rubicon switch, wire and a z locker controller I should be able to get the locker to function on the factory switch?

 

[b-roc]

So just to clarify…. If I get a Eaton Elocker, rubicon switch, wire and a z locker controller I should be able to get the locker to function on the factory switch?

And your favorite method of programming the computer to enable the front locker (i used a tazer) ... then yes ... been using it for quite a while with good success

 

[msiminoff]

I want to extend a huge THANK YOU to @Temperance for sharing the schematics and parts list to do this mod!!
The instructions were clear, installation of the additional wire terminals was a breeze, and in the end it all works perfectly. It's nice that I can now engage the front (Eaton) e-locker in my Mojave with the factory Rubicon switch.

One word of warning; I initially cheaped-out and opted to purchase a knock off locker sensor bypass.... No surprise, it didn't work right out of the box. I then ordered a genuine Z-LKR-OEM from Z Automotive and it functions correctly.

-Mark

 

[mojace]

The Mojave is the perfect vehicle for what I use it for: daily driver, towing, off road exploring, and overlanding (off-road camping). The only downside to the Mojave over the Rubicon for me is the lack of a front differential locker. Having a little OCD I like everything to look and function like it came from the factory. This led me down the path of how to add a front locker using the Rubicon off road console switch. It's actually much simpler than I anticipated, but it did require a fair amount of research.



Essentially you only have to install the Rubicon off road console and a short section of wire. The off road switch is what puts the front locker message on the can bus. The drive train control module is the same for all of the models and knows how to interpret the front locker message. Installing the off road console switch is just a matter or removing the Mojave one and installing the Rubicon version. Next you'll need to add the front locker wiring.



The plug (XY290A) you'll tap into is below the brake booster/master cylinder. I had to remove the driver side front fender to get access to this plug. This plug will probably only have the front driver wheel speed sensor wires coming from it. You'll need to run 4 wires from this plug to the front differential: fused ignition output, locker sensor return, front locker switch sense, and front locker return. These wires should be 18 gauge (spec calls for 20 gauge) and wrapped to prevent wear. You'll also want to wrap the section close to the exhaust with reflective tape. I attached the PDF files for the two plugs: XY290A and the front differential plug.

If you plan on using an ARB locker Z-Automotive sells a kit that can be used. You'll also need to enable the front locker. I used Z-Automotive Tazer mini for this. If you enable the front locker without a locker fix (Z-Automotive or other) or Rubicon axle with a hall sensor then you'll see a warning icon on the dash.



Parts List:

68359089AA Off Road Switch

1-1456426-6 TE Connectivity 4P Connector

1670146-3 TE Connectivity 1.2 F Terminal qty 8+

2138898-1 TE Connectivity Wire Seal qty 8+

Hi Temperance. Does it have to be the OEM Z Locker or will the one for aftermarket lockers work? I bought your harness and the factory Rubicon switch. I am putting in an Eaton E locker and I wanted to make sure I got the correct parts. The OEM Z locker is out of stock and the aftermarket one is instock currently.

The Mojave is the perfect vehicle for what I use it for: daily driver, towing, off road exploring, and overlanding (off-road camping). The only downside to the Mojave over the Rubicon for me is the lack of a front differential locker. Having a little OCD I like everything to look and function like it came from the factory. This led me down the path of how to add a front locker using the Rubicon off road console switch. It's actually much simpler than I anticipated, but it did require a fair amount of research.



Essentially you only have to install the Rubicon off road console and a short section of wire. The off road switch is what puts the front locker message on the can bus. The drive train control module is the same for all of the models and knows how to interpret the front locker message. Installing the off road console switch is just a matter or removing the Mojave one and installing the Rubicon version. Next you'll need to add the front locker wiring.



The plug (XY290A) you'll tap into is below the brake booster/master cylinder. I had to remove the driver side front fender to get access to this plug. This plug will probably only have the front driver wheel speed sensor wires coming from it. You'll need to run 4 wires from this plug to the front differential: fused ignition output, locker sensor return, front locker switch sense, and front locker return. These wires should be 18 gauge (spec calls for 20 gauge) and wrapped to prevent wear. You'll also want to wrap the section close to the exhaust with reflective tape. I attached the PDF files for the two plugs: XY290A and the front differential plug.

If you plan on using an ARB locker Z-Automotive sells a kit that can be used. You'll also need to enable the front locker. I used Z-Automotive Tazer mini for this. If you enable the front locker without a locker fix (Z-Automotive or other) or Rubicon axle with a hall sensor then you'll see a warning icon on the dash.



Parts List:

68359089AA Off Road Switch

1-1456426-6 TE Connectivity 4P Connector

1670146-3 TE Connectivity 1.2 F Terminal qty 8+

2138898-1 TE Connectivity Wire Seal qty 8+

Hi Temperance,
Question I have a Mojave, if I want to just use my factory auxiliary switch’s (1-4) is that easier and more straightforward than installing a rubicon switch and using the switch with the computer? At the moment I can activate my rear locker in 4Hi and I don’t want my front locker to be limited.

if I use the Auxiliary 1 button for example I extend this + a ground to the locker then turn on the switch in the computer program it then that would be simply on and off independently with no restrictions?

any thoughts on this?

thanks,
Jace.

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