TC lockup switch

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Can anyone tell me if it matters which way you wire the TC lockup switch? I currently have mine wired per the information on the TST site and it seems to be working just fine, which shows a wire spliced into the pin54 wire, and then to a switch, and then to ground:
http://www.tstproducts.com/tranny_install.html

Yet, the information on the featured article section of TDR shows a switch being placed in line on the pin 54 wire itself:
http://www.webwhims.com/member/featurearticles/TCCMysterySwitch.htm

Which one is correct? Or does it matter?

Dave

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94 3500 2wd E-brake, Less than 50,000 miles!! in beautiful, sunny, Sandbridge VA.

 

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On a 97 at least, the 2 position switch CONNECTED to the B-11 wine & a ground. The 3 position switch, is spliced INTO the wire. (you have to cut the wire) The ends of the cut wire go to the end & center terms on the switch, the last term wires to a ground. You also have to remove the trans. relay in the relay box on the left fender, & make a "jumper". I used 2 male spade connectors & a short piece of wire... . DDG

 

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So, I guess it doesn't matter, o. k. , thanks DDG

 

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Seabreaze,

If you hook up the switch "in-line" with pin #54, you can then use a 3-position double pole-double throw switch, and use the center position to keep the TCC from locking if you desire. I have mine hooked up that way, and there are times I do unlock it, and keep it unlocked, but not for long.

Wayne
amsoilman

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94'SLT 4X4 AT/White in color. Factory Tow Hooks & Running Boards. Amsoil By-Pass filter, Amsoil Air cleaner,and all fluids are Amsoil.
BD exhaust Brake, BD Torque Lock, BD Torque Converter, Dr. Performance Stage II Injection Pump. Mag-Hytec Diff Cover,Isspro Pyro, Boost,Oil temp Gauges mounted in 3 Gauge post mount. One gauge monitors Engine Oil, Trans, Diff. Temps.

 

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Okay, I seem to be a bit slow here, in the TDR article, using the orange and black wire, which wire goes to which terminal on the switch? I am guessing that the bottom terminal should be grounded? The article does not seem to address this.

Now that you mention it, it would be nice to be able to prevent the TC from locking up, especially on a good grade when you are in overdrive and waiting for a downgrade to let it lock up.

Dave

 

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Been waiting for this subject to come up!

Does the A/T lockup in 3rd AND 4th WITHOUT the switch? I think I remember a post where it indeed does. If this is true what good will the switch do? I have never had the A/T in 2nd going down a hill.


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99' Stock Quad 4x4 A/T LB 3. 54 20K Miles.
Did have both 18-11-99 & 18-08-99 TSB's performed.
Pull a 7000# TT over, around and thru the Cascades.
Enhancements: Blow-by bottle

 

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Seabreeze,
It realy doesn't matter on the switch. The switch is only going to apply a ground to the circuit when activated. If you do cut the wire and use the three position switch as mentioned earlier,you should use one side of the switch to connect a 12V source and then have a light on that circuit to a ground to show when the TCC is locked. This side of the switch is used ONLY to provide the light "ON" when TCC is activated. It will not effect the other part of the switch.

Wayne
amsoilman

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94'SLT 4X4 AT/White in color. Factory Tow Hooks & Running Boards. Amsoil By-Pass filter, Amsoil Air cleaner,and all fluids are Amsoil.
BD exhaust Brake, BD Torque Lock, BD Torque Converter, Dr. Performance Stage II Injection Pump. Mag-Hytec Diff Cover,Isspro Pyro, Boost,Oil temp Gauges mounted in 3 Gauge post mount. One gauge monitors Engine Oil, Trans, Diff. Temps.

 

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tlippy,
Yes, the TCC will lock-up in 3rd & 4th(Overdrive), but when decending a hill when you release the foot pedal, the TCC will unlock, putting you basicly in "free-wheel" mode. This is why the "switch" is so nice to have as the switch will keep the TCC locked, helping to hold the speed down when decending the hill. By keeping the TCC locked, it will also keep heat from building in the transmission, as the TC is not slipping.

Wayne
amsoilman


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94'SLT 4X4 AT/White in color. Factory Tow Hooks & Running Boards. Amsoil By-Pass filter, Amsoil Air cleaner,and all fluids are Amsoil.
BD exhaust Brake, BD Torque Lock, BD Torque Converter, Dr. Performance Stage II Injection Pump. Mag-Hytec Diff Cover,Isspro Pyro, Boost,Oil temp Gauges mounted in 3 Gauge post mount. One gauge monitors Engine Oil, Trans, Diff. Temps.

 

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I was wondering, if you cut the orange/black wire, and ground one of the two ends, it will cause the TC to lock up, right? Which one of the two ends?

This is what I want to do, I want to be able to use a 3 way switch to be able to choose between
1. normal operation,
2. keeping the TC locked up,
3. keeping the TC unlocked,
but I need to know which wire to ground in order to do this.

In other words, I want to ground the bottom tab on the switch, and run the 2 wires that are spliced into the two ends of the orange/black wire to the top 2 terminals, so that an up switch position is in normal mode as if the switch did not exist, the middle switch position would be to keep the TC from locking up, and the down switch position would be grounding out one of the two wires to keep the TC locked up. But, in order to do this, I need to know which wire to hook up to the top terminal, and which one to hook up to the middle terminal.

Thanks,
Dave

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94 3500 2wd E-brake, Less than 50,000 miles!! in beautiful, sunny, Sandbridge VA.

 

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If the switch seems reversed in operation when you install it, just loosen the lock ring, and turn it 180 deg. The center tab connects to the transmission end of the cut wire, the tab on the other end wires to the PCM on the firewall... ... ... DDG

 

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seabreeze,
There are a couple of articles in the TDR Magazine about wiring the TC Lockup Switch on your 94 truck which is different than my 97. If you don't have access to the prior TDR mags, e-mail me and I'll look them up for you.

Bill

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97,3500,CC,4x2, Auto, 4. 10LSD, All Options incl Leather, PacBrake, 3 Pos Lockup Switch, PrimeLoc, Jardine 4" Cat-Back Exhaust, 45 Gal. RPM Aux Fuel Tank, Mag-Hytec Covers, Painless Wiring Kit, Reese 20K Hitch, 80% Towing 12,000+LB 5th Wheel, 2000-3500QC, HO Engine, 6 Speed, 4. 10, SLT+ on Order

 

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The problem with manually keeping the TCC unlocked is that it will generate a fault code. BD experienced this with their TorqLoc computer as originally configured. Position #3 (down) on the three position TorqLoc selection switch WAS used to manually unlock the TCC. After the TorqLoc computer was reconfigured, position #3 now functions the same way their AutoLoc computer does (locks the TCC in 3rd and OD when the exhaust brake is activated). The manually unlocked position was designed for use by high horsepowered Rams that would otherwise "shear the face off" the TCC on a full power bonzai blast. The center position of the TorqLoc switch is OE operation of the TCC, the upper position allowing manual TCC lockup in 3rd and OD. List price for the TorqLoc computer kit is $225. (as of April when I purchased mine).

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'98. 5 2500 QC 4x4, (black) SLT Sport, ISB, LWB, 3. 54 LSD, auto. , 275 hp. injectors, Glasstite Vision II "canopy", 285 BFG A/Ts on 16x8 M/T Challengers, Warn 4X Boards, Mopar fender flares, front and rear NW Custom stainless steel/rubber mud flaps, Mag-Hytec diff. cover and trans. pan, Edelbrock IAS shocks, VDO Vision gauges, BD exhaust brake and TorqLoc.

 

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Thanks Bill and John,

That answered most of my questions, I think I have it figured out now. I will try the new wiring later this week and let you know.
As far as the BD switch, they are really nice, but I do not live anywhere near any hills, so it is only for when I go out camping and really need my exhaust brake. I can't see spending over $200 for a convenience like that, but if I lived in the mountains, I would probably buy one for sure.

(The highest point of land within 50 miles of my house is a pile of trash that they named "Mt. Trashmore") (seriously)

I did get to try out my brake and my present TC lockup switch up on the Blue Ridge Parkway and Skyline drive this week, and all went very well.

Dave

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94 3500 2wd E-brake, Less than 50,000 miles!! in beautiful, sunny, Sandbridge VA.

 

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Hey all,

I too have an auto trans that I want to add a TC switch to. I have heard good things about the BD one. Anyone have any problems with this product? Is the installation easy? Thanks!!!



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Evan A. Beck

98. 5 2500, 4x2, RC, ISB, A/T, SLT, 3. 54 LSD, Trailer tow, Aux. suspension, Forest Green/Driftwood, 41,450 miles, 10/17/99

4" Exhaust split into duals, with 4" x 20" chrome tips one on each side after the wheels, Jacobs E-Brake, K&N Filter (Scotty style), Auto-Meter Ultra Lite boost & pyro, turbo silencer ring removed, OEM foglamps, OEM 1-ton tailgate marker lamps, Sylvania Cool Blue® 9004 headlamp bulbs, halogen backup bulbs, Husky diamond plate toolbox, Line-X spray-in bedliner, plus other cosmetic modifications

"I'd Rather be RAMMIN' than STROKIN'"