I recently swapped my front D30 for the Tera44 housing with factory Rubicon locker on my 2016 JKU. I made the assumption the locker would just need a switched positive signal and connect ground to the battery, similar to how I wired the rear locker. I have tried this method and it is not engaging the locker from what I can tell. I have current at the differential and all the wiring is good, so that’s not the issue.

There is another plug on top of the axle housing in addition to the two wires coming out of the differential. I am wondering if maybe the locker is wanting some kind of input to that plug.

Any help is appreciated. I have searched for wiring diagrams and tried to figure out if that other plug has anything to do with it, but I haven’t really gotten anywhere.

 

No, that is for the locker light on the dash. There is a plunger switch that turns on that light. All you need is 12V+- to make the locker engage. There may be something wrong on the install of the locker. Was the hosing designed to have the Rubi locker? If I remember right they have different clearance issues inside the differential than other lockers.

 

That is helpful, thank you. I figured it was just +- to the locker plug, but wasn’t sure. The housing came straight from Teraflex with gears and locker already installed, so I’m relatively confident the install was done correctly but there’s always that chance it wasn’t.

 

Yup, this is simple 2-wire set up to actuate the locker. So you ordered a new Terra 44 axle and it came with brand new rubi locker installed with gearing? Getting a rubi locker in that scenario is a curious decision. If it were me, I'd pop the cover off and get my eye on it and see if the actuating ring is sliding over. It's going to be clear as day if there's a problem in there. There could be a minuscule chance the locker isn't connected well to the bottom side of the plug heading to the outside of the housing. That plug is literally just a bridge. Wires plug in to it on the internal side, then again on the external side.

 

You are right. I would have preferred an Eaton e-locker like I have in the rear, but the Teraflex preassembled options were either factory rubicon e-locker or ARB, and I prefer electronic so it was my only option without just buying the housing and putting a locker in there. Good call on pulling the diff cover and checking it that way, I should have thought of that. I appreciate the help.