This is Connector C4359.

 

Will do, the shop is a month out and I haven't decided if I am going to do this or a canopy first, so it will be at least a month.

 

Well, I just talked with the local shop that will be doing the mechanical work and let them know about the harness and what I will do up front. They talked with both Yukon and several dealers making sure they are going to order all the right parts - essentially figuring out what is different. The only open question is how the wiring happens on the differential - whether they will be getting a new cover with a connector or have to drill and tap something. Apparently neither Yukon who makes the kit or the dealers knew what would need to be done.

Does anyone have a picture of their 3.31 w/locker differential they could post showing where the wiring exits? It should be any 2015+ with the 3.31 (Super 88) that has a factory locker on it.

 

I found the picture of the factory wiring on the diff in the service manual. The connector is on the housing and there is no connector or opening on my diff. We're trying to figure out what comes with the Yukon kit, seems like they aren't sure themselves or have any info on installing it. From what I gather, they just sell the OEM parts to Ford for installation at the factory and don't know much about a retrofit.

We're trying to figure out if the kit comes with the internal wiring (almost has to) as well as the connector to mount on the diff housing. From there, we need to figure out how the connector gets mounted. It looks like maybe a simple hole and a threaded bolt hole on the bottom part of the connector, but that's just a guess. It's pretty expensive to buy and hope for the best, but it may come down to that.

I think this might be the connector, but on a couple of sites it lists it as working in the 9.75 diff, I'm not sure if they use the same one in every diff or if I am looking for another part number. On the plus side, it looks like it has an o-ring and there would be a hole the connector goes through and then a threaded bolt hole to hold it on which should be fairly easy.

https://www.fcoemparts.com/oem-parts...CABEgIvwvD_BwE

 

Any info on the kit? Part number? Where are you getting this kit from?i want to do the same on my truck.

 

https://www.yukongear.com/partslist....ctable+Lockers

My diff guy will either buy them from Yukon, Randy's or a local Ford shop. It sounds like there is only one made for both OEM and aftermarket and it comes from Yukon.

 

Gotta luv it when people respond without reading the entire question...already mentioned window sticker details.
The door jamb says rear axle '19'...so whatever that means.
Sorry, not trying to hijack the thread. Just trying to find out what '3.55 ratio regular axle' means?
Meaning, do they still make/sell w/o limited slip? If so, I'm not interested in electric locker and would like to swap it out for LS.
Thanks,

 

They only come with e-locker or not. No L/S option

 

Ok this is a picture of that connector on 3.55 axle.
Whats wrong with Yukon gear parts men ?
Lazy and incompetents couldn’t open the box and look what’s in the kit or what?

 

Sorry you didn't like the reply, I'll try harder next time. You could always put "19 axle code F-150" into Google and quickly figure out exactly what you have. Ford makes several diffs with and without LS.