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Adding oem rear locker

954paulo

954paulo

Well-Known Member
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467
Location
ny
Are the plugs installed already,
If I were to pick up the 4x4 cluster w/ rear locker switch and and adventure rear axle would I simply plug them in to the oem plugs.

I know the cluster has the same plug as the non rear locker cluster. Is there a plug under the truck already wired?




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954paulo

954paulo

Well-Known Member
Messages
467
Location
ny
Or is it simply easier to get a new locker ad add it to my 10 bolt


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954paulo

954paulo

Well-Known Member
Messages
467
Location
ny
So what is the best / preferred thing to do


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Schwarttzy

Schwarttzy

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1,390
Location
Rockford IL
Whoa, Whoa, whoa. Don't be putting a tru-trac in there, full selectable lockers are way better in sticky stituations. The only time you would consider a tru-trac is for muscle cars or differentials that might not be able to handle the torque.
 
High Five H2

High Five H2

Well-Known Member
Messages
1,627
Location
West Texas
I considered a tru-trac for a long time because I figured that I wouldn't ever do wheeling that was hardcore enough to need a locker and because I wanted it to double as a bad weather vehicle. I did some looking around, and I realized that selectable lockers would be better for both. an LSD will get you unstuck, but you'll lose control easier around turns. An e-locker will also get you unstuck, but you can shut it off for driving speeds. It's also way better for off roading. I'd like to get the factory lockers and hook them up like they were from the factory, but from what I've read it's pretty difficult. most people prefer to have a bit more control over their lockers. I like my stuff to be factory, so I'm going to try that first when I get around to it. it will be a while, though.
 
SuperBuickGuy

SuperBuickGuy

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3,403
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Woodinville, WA
trutrac is not a limited slip, it's a full locker (no clutches) like a Detroit but without Detroit's "I'll send you downhill backwards in your short-wheelbase vehicle the moment it gets mildly moist issue."

I'd say don't ask me how I know this, but I'll tell. I had a 74 Blazer on 38s with a limited slip front differential and a detroit locker in the rear (5.13 gears). I was coming down zoo hill in Portland (Sunset highway) into the tunnel at (how shall we say this?) I was moving well over the 55 mph speed limit. It was wet, but not torrential downpour, I let off the throttle on my well-built BBC; and did a really neat 720* pirouette followed by a slide down the outside wall of the tunnel..... nothing but wheels on the ground (thankfully). After I unclinched my butt cheeks from the seat, and pried my fingers off the steering wheel - I then backed up a couple feet to unlock the detroit and life was good (other than having to replace the entire side of my truck, and get a fresh set of underwear.... which I'd sucked up with the seat cushion when I clinched).

The trutrac with gear engagement is a softer engagement; thus, no locking the rear wheels up and causing that kind of slide.
 
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Schwarttzy

Schwarttzy

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Rockford IL
A Tru-Trac is neither a LSD or Full locker you two. A Tru-Trac is a helical gear differential. It is torque sensitive, not speed sensitive. Which means even if one wheel is spinning really fast, it has no effect on the Tru-Trac. Where as if LSD would be trying to lock up. When more torque is being applied to one side or the other Tru-Trac tries to send up to 70% of the torque to the wheel with traction.

All of this is why it's a great "locker" (it's not a real locker) for the front differential in snow. Because it tries to pull the vehicle straight, instead of push the vehicle. You should see what you can do when you apply slight brake with this locker.

The Tru-Trac is really sweet and would love to put one in my AAM 7.5 (the front differential ), but again it is neither a LSD or Full locker.
 
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Schwarttzy

Schwarttzy

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Rockford IL
O and why the fact that car manufacturers still have open differentials is something that is very frustrating when you realize how good a Tru-Trac is.

Even with all that said, a full locker is better for the H3 Hummer in the rear.
 
Schwarttzy

Schwarttzy

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1,390
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Rockford IL
Wow I forgot the coolest part. While a Tru-Trac does a great job transferring torque, it can never fully lock up. Which might sound counter intuitive, it is actually the greatest asset the Torsen LSD.
 
SuperBuickGuy

SuperBuickGuy

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Messages
3,403
Location
Woodinville, WA
Schwarttzy said:
The Tru-Trac is really sweet and would love to put one in my AAM 7.5 (the front differential ), but again it is neither a LSD or Full locker.
Click to expand...

they don't make it for a 7.5 ... and eventually, the detroit tru-trac will lock the wheels up completely - but it does it gently, that's the point of the heli-cut gear. Limited slip means that no more than 40% of the power will go to the free-spinning wheel; and IRL, it's more like 20%. This is contrasted with either the old Detroit lockers, or the Tru-trac which will put 50% of the power to either wheel - just with the tru trac it doesn't do so immediately
 
SuperBuickGuy

SuperBuickGuy

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3,403
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Woodinville, WA
jallen9 said:
according to the manufacturer's website, it is an LSD. Also, detroit and eaton are the same company.
Click to expand...

there are two points there... 1st - the book definition of limited slip; and 2nd - how the tru-trac works and whether or not it fits within the definition of limited slip or locker.
 
Steve #1

Steve #1

Well-Known Member
Messages
534
Location
TEXAS
Zach said:
The wiring is not there. You would have to run the wires to and from it
Click to expand...

And it isn't just a matter of running wires between the switch and the locker. The switch is wired. The locker would need to be wired to the Transfer case control module and the module would need to be reprogrammed.
 
Zach

Zach

Mall Crawler
Messages
4,812
Location
So Cal
SuperBuickGuy said:
me too, no idea why you'd ever willingly wire the computer to control the locker.
Click to expand...

Only reason I can think of is incase you accidentally hit the switch. My front locker is not tied into the system and activates upon hitting the switch. Already told my daughter never ever hit this. It's high up enough to where you can't bump it
 
alrock

alrock

El Diablo
Staff member
Messages
10,664
Location
Scottsdale
For the safety aspect, you can install safety switches away from the locker switches so that it takes two switches to activate the lockers.
 
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