[Bnorm]

There's a light blue plug that comes out of the passenger side of your transfer case. It has two wires, I just interrupted one of them with a switch. I actually went and got a push button shift knob from a scrap yard and used that as my switch.

How and to where did you run the wires? I would like to do this mod. Thanks for your help!
Brock

 

[duby08]

How and to where did you run the wires? I would like to do this mod. Thanks for your help!
Brock

I just ran the wires up the top of the transfer case and up the shift lever. Just take caution to make sure they are strapped out of the way of moving parts. I also put some wire loom over them to help protect from heat.

 

[Yeti]

Sweet, are there two wires there(blue plug)? I wonder what they both do or if its just like one hot one goes into the t-case switch and the other comes back out to signal the ADD, you think thats how it works?

 

[Bnorm]

Sweet, are there two wires there(blue plug)? I wonder what they both do or if its just like one hot one goes into the t-case switch and the other comes back out to signal the ADD, you think thats how it works?

I don't know for sure, but that's what I'm thinking... Hopefully someone will chime in and clear this up.

 

[not2XS]

I don't know for sure, but that's what I'm thinking... Hopefully someone will chime in and clear this up.

It's either that one is hot and the other gets switched to it in 4WD, or one is ground and the other is switched to it in 4WD. I'm about 90% sure its the second case. Either way it makes little difference, you just put in a manual switch from one to the other in place of having the t-case do it, or if you want to get more fancy you make your switch open the connection even if the t-case closes it.

 

[Bnorm]

you just put in a manual switch from one to the other in place of having the t-case do it,...

...or if you want to get more fancy you make your switch open the connection even if the t-case closes it.

How so on the latter? I guess I don't really understand. What would be the advantage of one setup over the other?

 

[not2XS]

How so on the latter? I guess I don't really understand. What would be the advantage of one setup over the other?

Well, one way would be to disconnect the switch inside the t-case, and simply replace the segment of circuit with a manual switch. Now the driver does to the ADD what the t-case used to do - and needs to remember to shift the lever into 4WD before hitting the switch if doing it at speed (or you get a real nasty slam in the front diff). Also you want not to hit the switch accidentally, if at speed.

The second way would be to interrupt ONE of the wires going to the t-case, and add a manual switch in series with the one in the tcase. This way you could hit the switch accidentally or out of sequence while at speed, and nothing will happen until you shift the lever, when it will behave as normal. Both switches need to be closed to activate the ADD. When in 4WD, you can operate the manual switch to disconnect the front end, to allow 2WD low range (or just to stir up the diff oil on pavement).

I'm pretty sure this will work, except it was hard to get my fingers and the strippers at both ends of the cut wire, so I ended up doing it the first way myself.

 

[Toyo4x4]

Has anyone found the write-up for the non-push button transfer cases? I'm not cutting an splicing without knowing someone did it, and it worked. Seems the interupting of one of the plugs with a switch might work, just doesn't seem to be a popular mod with the non-push button guys.

 

[Toyo4x4]

*edit* Nevermind, that was a second option to the grey-wire mod.

 

[duby08]

I had my transmission out today and played with the wires to see if it made a difference. You can cut and splice a switch into either one of the wires that go through the bright blue plug on the passenger side and it will still work.

 

[not2XS]

*edit* Nevermind, that was a second option to the grey-wire mod.

Just to be sure to make it perfectly clear:-
There is a "blue-plug mod" on the driver's side of the transmission as an alternative to the "grey wire mod" for the locker in any range (if you have manual transmission and no ABS).
The one discussed here is an identical blue plug but on the passenger side of the transmission for the 2-lo mod. I have non pushbutton and I have done it successfully.

 

[Toyo4x4]

Just to be sure to make it perfectly clear:-
There is a "blue-plug mod" on the driver's side of the transmission as an alternative to the "grey wire mod" for the locker in any range (if you have manual transmission and no ABS).
The one discussed here is an identical blue plug but on the passenger side of the transmission for the 2-lo mod. I have non pushbutton and I have done it successfully.

I know, I posted it thinking it was the mod for the two low on non push button trucks, but it was the paper clip mod which is an alternative for the grey wire mod.

Sent you a message btw.

 

[mr4x403]

i love this mod, but the only thing i don't like is the dredded axel wrap. in the sand i get it very bad. it does however help with perfect donuts locked up in the rear and nice little burnouts on the street!!

 

[Matt]

Allows the use of low range on the transfer case without engaging the "Automatic Disconnecting Differential" or "ADD" for four-wheel drive.

I can't get the damned plug to come apart. I can see one little clip holding the two together but lifting it up doesn't seem to be helping.

 

[WATRD]

I can't get the damned plug to come apart. I can see one little clip holding the two together but lifting it up doesn't seem to be helping.

You may have to monkey around with it a bit if it's well weathered, but with some finesse, it will come apart.

 

[Matt]

You may have to monkey around with it a bit if it's well weathered, but with some finesse, it will come apart.

Yes, I eventually got it to come apart. I just had to get a little rough with it.

 

[WATRD]

Yes, I eventually got it to come apart. I just had to get a little rough with it.

So all is well?

 

[Matt]

So all is well?

Yes, all is well. Thanks for the pics and post. Free mods rule!

I did the Grey Wire mod while I was at it, used customtacos.com write up, and now I'm sure to confuse myself with all the transfer case/locker options!

 

[WATRD]

That's good to hear.

Maybe you can put a cheat sheet on the dash to remind you of what settings you want to use for what terrain hehehhehe

 

[Matt]

That's good to hear.

Maybe you can put a cheat sheet on the dash to remind you of what settings you want to use for what terrain hehehhehe

LOL. That might help. I'll have to come up with every possible scenario and setting to use. Heheh. Beats holding up all the trucks behind me waiting to get over the obstacle too.