High CDL Switch Install on FZJ80 - 05272012 (1 Viewer)

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Hey, guys - since the weather was unseasonably cool yesterday and today, I took a break from digging in the mud to fix irrigation leaks around the house to install the Center Diff Lock switch into the dashboard allowing selection of locked center transfer case even when in High gears. Here's the write-up;

Difficulty = 1, if you can wield a screwdriver without injuring yourself, you can tackle this project. Cuss Factor = 0, as long as you have the parts ahead of time, this is plug-and-play. Time = 30min to an hour, being careful.

Start by checking out the Slee instructions here - Christo even sells the correct TLC Factory switches for this job, but the price is up there: http://www.sleeoffroad.com/installation/difflock_install.pdf

You'll need the following parts;
1) Phillips head screwdriver - to remove 4 self-tapping screws which hold the bezel in place.
2) CDL switch - or any standard TLC switch, from what I'm told, though there's a minor modification if you choose to use a Hazard Switch like I did
3) Some patience.

As the Slee instructions note, start by removing the factory cupholder if yours is so equipped. This is accomplished by extending the cup holder, and then taking out the 2 screws on either side. This frees up the top of the bezel. From there, remove the ashtray, and within that space are 2 more screws just like the other two, so don't worry about getting them mixed up on reassembly. Set these aside. Here's the quick view;
30kpwl5.jpg


You'll notice that I also put the keys in the ignition and pulled the gear selector all the way back to afford me more space to work with (*and to get clearer pictures for 'yall).

Grab the bezel on the right side from one of the holes, and pull GENTLY to free up the center friction locks. There's a set of friction locks on the Left Side that you can see at the top of this picture;
1o9gfl.jpg


At this point, pop out the switch cover (mine was for the Toyotal Security lights which I relocated to the bottom of this panel - yours may or may not have that one, and if it does, there's plenty of wire left to move it wherever you want). Now that you have a free slot for your High CDL to be mounted in, slide the switch into place from the front. You'll be able to see the harness tucked back behind there, and pull it forward so you can get to the white connector shown above. That harness plug will have a shunt plug which is white, with a single jumper of yellow with a silver trace. Remove the shunt plug, and set it aside.

Since I was using a TLC Hazard Switch, the connector from the harness needs to be cut slightly right next to the retention tab - I'm guessing Toyota designed it this way to prevent the wrong harness from being attached to the wrong switch at the factory - given that the switches and plugs are NEARLY interchangeable. It'll be obvious where it needs to be cut to allow the plug to fit into the switch. Plug it in, and it will snap into place with a click.

Reinstall the bezel taking care to tuck the wires in carefully so they don't hit on anything, and use care when pushing back in against the friction locks. Here, you can see the High CDL switch installed, along with a red cover for the indicator light, and I've also glued the custom aluminum CDL Switch Cover Plate custom made by one of our local forum members. Install the 2 screws, put the ashtray back in, and slide the cupholder back in, along with it's 2 screws, and you're done.
9a0hmc.jpg


Once finished, you'll be able to click the High CDL switch and get this;
svp2q0.jpg


I tested it out repeatedly, and you can hear the CDL in the transfer case motoring back and forth, along with the indicator on the dash showing what position it's in. I tested it without the engine running, and will have to get out off pavement to test it out fully.

Now that I have the option for CDL in High gears - what are the conditions that I'd be using it?

Honest question for those of you still reading. I'm thinking it's best for anywhere that I'd want the extra traction of even split F/R but also want to use higher vehicle speeds; shuffleboard roads, maybe??? I'm curious what others would use High CDL for, but glad I have the option now. I would also think that this allows you to engage the Rear or both Rear and Front lockers if so equipped, while in High gear. Not sure why I'd do that, either, but the capability is there...

Thanks again, Saddletramp, for providing the parts for this quick and easy install - I don't know why I put it off for so long!
 
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I use the CDL switch more in LOW range. Very often I run trail in LOW with center differential OFF. I believe you need to do the pin 7 mod for this to work, Slee - Pin 7 Mod for CDL (Toyota 80 Series Land Cruiser). You need to remember to engage the CDL before going up a challenge incline otherwise the vehicle may go in opposite direction.
 
Nice write up LD!

We must have been in the same wavelength 'cause yesterday I also took advantage of the cooler weather and installed my center diff button on my 80... amongst other things.
 
Ancient thread alert!

I've been searching mud on this topic for a while and this 5-year old thread is the best one :D And to answer that question the OP asked 5 years ago, I've personally never felt the need for CDL or pin7 for any sort of driving condition, however I've got some crazy noises coming from my drivetrain and going for a test drive with a drive shaft removed should help me narrow it down. Thanks!
 
another typically great LongDuck write up~

Now that I have the option for CDL in High gears - what are the conditions that I'd be using it? I'm curious what others would use High CDL for, but glad I have the option now. I would also think that this allows you to engage the Rear or both Rear and Front lockers if so equipped, while in High gear. Not sure why I'd do that, either, but the capability is there...

that's a good question. I've installed mine in order to do testing with the front driveshaft removed. Otherwise it gives us cruiserheads "another cool mod to do"

Id like to hear opinions on when this would be a good feature to use in 4H. thanks
 
A questionable benefit is that you can remove a driveshaft and/or other part if required due to damage in the drive train, engage the cdl, and drive home. Questionable because you can do the same thing if circumstances required it by putting the transfer case in low and then removing the cdl fuse, which will prohibit the cdl from unlocking when shifted back into high range.

I have the switch, and have had the opportunity to use it in the scenario above. Honestly, after removing the broken birf in the field, messing with the fuse to gain a locked CDL in high range would have been a minor issue, but it was nice to not have to think about it. Otherwise, the only benefit I see is in being able to unlock the CDL in low, when turning on high-traction surfaces, mostly for peace of mind. In my truck the CDL usually remains unlocked in low, and is only engaged when I feel I might need the extra traction, which is a low percentage of the time I'm off road. Of course this requires the 7-pin mod or other method of taking low range CDL control away from the cpu.

Bottom line, I have the switch not to be able to engage the CDL in high range, but so that I can choose whether or not to engage it in low range. Other than the extreme case I mentioned above I don't see any reason to be in high range with the CDL engaged.
 
Always nice to wake up an old thread from time to time.
Pretty much what Spike said. I usually cruise along in low and lock it when I need it. I have used it in high range when doing some hi speed thru a silty section.
 
FWIW, I use the CDL in high range regularly in winter. With an auto locker in the rear (I run an Aussie), handling the truck on snow and iced over roads can get a little squirrelly. Locking the CDL makes the slippery handling more predictable. However, switching in and out of a locked CDL needs to happen as quickly as road conditions change.

On my non- locked 80, I never use the CDL switch in high.
 
I use the CDL in high every time on dirt - if you have ever tried to brake hard with the ABS system active, you'll know why (the truck will slide somewhat uncontrollably)
 
I use the CDL in high every time on dirt - if you have ever tried to brake hard with the ABS system active, you'll know why (the truck will slide somewhat uncontrollably)
Which is why mine is disabled. :hillbilly:
 

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