The "Two-Low" mod

23327 Views 106 Replies 32 Participants Last post by Matt-W, Jan 23, 2007

WATRD

Discussion Starter · Oct 8, 2004 (Edited)

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

http://www.wattora.com/mods/twolow/

Applicable to "push button" 4x4 models.

Edit: Fixing the broken link

41 - 60 of 107 Posts

ianshoots

· #41 · Feb 3, 2005

Okay, I dig the sound of this, I just want a little clarification. You CAN put the switch into either of the wires coming from the transfer case. After doing so, and by leaving the switch "ON" (all connections made) you can drive and shift the truck the same as always. If you flip the switch while in 4 low, it will disconnect the front and allow 2 low? You probably just want to put it back "on" before disengaing the 4 wheel, so that you can start as normal next time.

Yeti

· #42 · Feb 3, 2005

Right, but you wouldnt need to switch it back. Really there would be no need to have it on unless you want 4wd otherwise you could leave it off all the time. If you had a switch that would engage 4wd without shifting the lever to engage the front driveshaft, like someone else said, then at road speed the diff would suddenly send power up to the driveshaft that isnt spinning and things would get an ugly jolt from engaging.

ZR2Steve

· #43 · Feb 11, 2005

Somehow I'm confused (whats new, right)

All this talk of switches? Are you not using the stock Toyota switch on the T-case shifter to set 4 wheeldrive, and the lever to pick High or Low range?

Why is there a switch in that 1st picture for the "locker mod"?

I have been running the "locker Mod" and a 2lo mod (I didn't do it like this) for a few years now.

ANYWHO these are two GREAT mods to have, and I use mine often.

WATRD

Discussion Starter · #44 · Feb 11, 2005

ZR2Steve said:
Why is there a switch in that 1st picture for the "locker mod"?

Because when I did the write up, there was a lot confusion between the "locker mod" and the "2lo mod". For some reason, some people thought they were one in the same. So, when I took the pic, I labled it so it was obvious that the 2lo mod had nothing to do with the locker mod.

ZR2Steve

· #45 · Feb 11, 2005

WATRD said:
Because when I did the write up, there was a lot confusion between the "locker mod" and the "2lo mod". ......So, when I took the pic, I labled it so it was obvious that the 2lo mod had nothing to do with the locker mod.

Cool a reply from the writer. you did a good job showing (Pic) and wording how to do this mod.

I have a 2001 with auto trans, and the shift points went into the lo-range mod, and I didn't like that. So I just modified the harness at the ECU under the dash.

So I bet you think I'm no longer confused, wrong, my confusion still lives.

So that extra switch on the dash is NOT part of your locker mod like it says?

If it is, why did you need an extra switch?

Thanks for walking me thru this.

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WATRD

Discussion Starter · #46 · Feb 11, 2005

Okay, the first picture of the write up at http://www.wattora.com/mods/twolow/ is to show what "Push Button" 4WD looks like. It is there to distinguish that system of engaging 4wd from the type where you have to shift the stick to put it in 4wd.

Since there was confusion about what the 2lo mod did and that confusion seemed to stem from the "locker mod", I captioned the switch I use to disable the locker mod with "Switch for the "locker mod" This is a different mod from the "2lo" mod." That switch is otherwise unrelated to the 2lo mod.

That switch IS my locker mod. In the down position, the locker performs as stock, engaging only in 4lo. With the switch in the up position, it grounds out the gray wire for the locker mod, allowing the locker to function in all xfer case positions. I did that so that if someone else drives my truck, the locker cannot be accidentally engaged while they are on road. I could have foregone that switch and simply grounded the wire so that the locker mod was always active and the locker engaged with a press of the stock switch, but I wanted to be able to lock out the locker in 2wd.

Make sense?

Neither the locker mod nor the 2lo mod changes your shift points, I also have a 2001 auto, so you lost me there.

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ZR2Steve

· #47 · Feb 12, 2005

WATRD said:
I did that so that if someone else drives my truck, the locker cannot be accidentally engaged while they are on road.

OK, I understand, that is a good idea.

WATRD said:
Neither the locker mod nor the 2lo mod changes your shift points, I also have a 2001 auto, so you lost me there.

Interesting, I wonder whats up with that. It dosen't matter at this point, mine works fine now. I also didn't like the idea of of water-tight connectors hanging down and open under my truck. Either way I find the 2-lo mod VERY useful, and was inspired to do mine from your write-up.

So THANKS for clearing this for me and the write-up.

WATRD

Discussion Starter · #48 · Feb 12, 2005

You are very welcome Steve.

JaresTaco

· #49 · Feb 23, 2005

Not a problem man but if ya find anything out for the non-push button T-Case's let me know, I would love to have the 2-Lo option for when I get a front locker.
Thanks in advance,

Bnorm

· #50 · Feb 24, 2005

JaresTaco said:
Not a problem man but if ya find anything out for the non-push button T-Case's let me know, I would love to have the 2-Lo option for when I get a front locker.
Thanks in advance,

There's some info here about the 2-lo mod for the manual transfer case guys:
http://www.tacomaterritory.com/forum/showthread.php?postid=28879#post28879

gary briggs

· #51 · Mar 26, 2005

some of this cheap tricks are so easy its mind boggiling, i love this cheap tricks forum

99tacoma4x4

· #52 · Mar 28, 2005

ok ive done the grey wire mod....i also just got my 99TRD outa back from the dealership for blowin up the rear diff NOTHING TO DO WITH THE LOCKER MOD....(but dont drop the clutch hard and fast at redline instead of the tires flying...parts do) anyways the warranty'd it and all was well. with 3 months left on my waranty im slow to make changes. Has anyone with the non push button actually been running the 2WD-Lo mod? and can someone explain exactly how this mod works..cant u just do a wire mod to the hubs so they dont lock? and let the driveshaft spin? or is that bad. also if i do this mod...any danger of fuckin anything up? besides flippin the switch at speeds? bla bla more info would be nice. Also i find the grey wire mod very useful....but where would i find 2WD low useful? tryin to think of circumstances...however if i go lock-rite up front...then i could use it as a toggle switch so i could turn tighter...so that'd make sense, but why else?
thx alot for answers i get

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duby08

· #53 · Mar 28, 2005

99tacoma4x4 said:
ok ive done the grey wire mod....i also just got my 99TRD outa back from the dealership for blowin up the rear diff NOTHING TO DO WITH THE LOCKER MOD....(but dont drop the clutch hard and fast at redline instead of the tires flying...parts do) anyways the warranty'd it and all was well. with 3 months left on my waranty im slow to make changes. Has anyone with the non push button actually been running the 2WD-Lo mod? and can someone explain exactly how this mod works..cant u just do a wire mod to the hubs so they dont lock? and let the driveshaft spin? or is that bad. also if i do this mod...any danger of fuckin anything up? besides flippin the switch at speeds? bla bla more info would be nice. Also i find the grey wire mod very useful....but where would i find 2WD low useful? tryin to think of circumstances...however if i go lock-rite up front...then i could use it as a toggle switch so i could turn tighter...so that'd make sense, but why else?
thx alot for answers i get

With this mod on the non push-button transfer case the driveshaft still spins. All it's doing is interupting the signal that tells the vac system to engage the front axle. I have been running it for about a year with and without a locker in the front. I enjoyed the 2low on some trails that didn't require 4wd, but the control of the low range was nice to have. After locking the front end it is NO LONGER a 2 low mod. It essentially makes it a 3low mod as your front driverside tire will be engaged when you engage the transfer case. The push button then just allows you to control whether your front passenger side is engaged or not.

Yeti

· #54 · Mar 29, 2005 (Edited)

Non-push button

I have a manual t-case and the other day when I would pull it back into 4 HI could hear a click coming from a relay in the passenger side kickpanel. When I heard the click the light on the dash hadnt come on yet, becuase i wasnt moving, and so I figured the relay didnt turn the light on so it most likely is one that engages the ADD.

I opened up the panel and pulled out the relay... it took some testing but I found was I thought was the ground and I wired a switch into it. At first I had the wire sent over to the switch and then from the switch I grounded it to a nut by the steering column. Well that didnt work(there were blowing fuses and exlposions and fire coming from under the hood) and I guess it turns out the wire must not have exactly been a ground wire. The funny thing is I removed the relay opened it up and looked how every wire was cionnected and wrote down what I decided they were. I must have gotten the ground and the 12v activation wire mixed up.

So to make it work I undid the switch from the gounding nut I had set up and ran that wire back over to the wire I cut off the relay harness...

Bottom line

: If you want to use the relay in the cab to control the ADD it can be done. the end

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J-Man

· #55 · Mar 29, 2005

i love the 2-lo mod, makes backing my boat and equipment traiilers real easy up inclines.

Zintradi

· #56 · Oct 27, 2005

this mod is an absoloute godsend if you have to drive in a city like Seattle or Tacoma... It allows you to start on the hills with little effort and then just shift up into 2hi and be on your way

99FlowedTaco

· #57 · Oct 28, 2005

eh i had the money to blow amongst many other items like a ps pump rebuild kit ect ect so i just bought the twin stick setup for my manual t-case (non push button 4wd) no messing about with wires and such although from what i have seen on this subject it works great. I just like having 3 knobs to play with tranny shifter / tcase 4wd/2wd and high/low lmao no sexual remarks about my post please unless your blonde , female and about 20 - 35

Pirox

· #58 · Oct 28, 2005

So does this mod work on the 05's?? I have the manual tranny with the push button on the dash. It's also the selector for 2hi, 4hi and 4low. I haven't seen any of the 05 guys chime in yet.

Kent

JaresTaco

· #59 · Oct 28, 2005

Thanks!!

Zintradi

· #60 · Oct 28, 2005

Pirox said:
So does this mod work on the 05's?? I have the manual tranny with the push button on the dash. It's also the selector for 2hi, 4hi and 4low. I haven't seen any of the 05 guys chime in yet.

Kent

no this wont work... the 05 is more complicated then earlier years.
trails are still being blazed for the 05 as it is basically a completly new truck

41 - 60 of 107 Posts

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