take a switch (single throw single pole) and run one end to a ground then take the wire from the other side of the switch and tap into a wire comming from the trans harness right under your drivers seat that is purple with a yellow stripe on it. use a clip on type wire tap. just dont forget to unlock it before comming to a stop, trust me i felt like a jackass. but it greatly improves transmission temp and economy around town. have fun!

 

use a clip on type wire tap.

Uh.....no.

Solder and shrink-wrap.

 

The clip on type wire tap will let water in the wire and start corrosion. I would say use solder and shrink tube.

 

what to you gain by doing this?

 

Just put my switch in. Best ten bucks I've ever spent! It's like an electric clutch. Tranny temp went way down, and it's got a lot more umfth to it.

 

do you tell a difference right off the bat?

 

huge diff

 

Wouldn't a lock up switch be pretty tough on a stock trans, or is it ok if used gently?

 

As long as you're not lugging the engine, the switch operation on an OBS truck is identical to what the PCM is already doing with the TCC solenoid.

 

do it you will love it, and its fun to play with!

 

Please explain how this effective works and what benefits I will get. And the disadvantages, thanks I see lower Trans temps.

Would I use this while normal driving?
Around town?
On the freeway?
Pulling my 14' trailer?
Pulling my boat?
Pulling my 36' travel trailer?

 

all of the above

 

Is the harness you are tapping into under the cab or inside it?

 

its under the cab

 

I'm pulling the camper this weekend, I'll have to do this mod this week.

 

i will be using this thread soon

 

Awesome, glad I found out which wire it is. Now I need to figure out a switch that I can so I have it so it's locked, stock signal, and unlocked.

 

i bought an illuminated switch... that should work

 

single throw single throw switch its either locked up or its same as stock

 

I need mine so I can keep it unlocked too. For desert high speed stuff, it is what I was recommended to keep the trans alive on another forum.

 

What would be the proper way to use this setup?

 

Would it be wise to tow with the torque converter locked at highway speeds in over drive (65-75 mph)?

 

It SHOULD be applied with factory programming at that point anyway......

 

What benefit would this do in lower gears?

 

less heat build up from not slipping the torque converter, longer life of converter if used properly and makes general driving easier. better manners is what it did for me. and yes od is alaways locked by the stock drive train module. just try it and if you dont like it then your out mabye $4 and you can just pull it out.

 

The only thing I ever used mine for was slower cruising with the OD off. I liked it before I got PMT tunes on my NVK.

I hated that the TC unlocked when the brakes were applied.

 

I wonder...... Could I use an old school floor mounted dimmer switch to this? That would be pretty easy to cycle instead of having to look for a toggle switch. Never have to take your eyes off the road.........

 

easily

 

If I were to run a dimmer swith hooked up instead of a toggle, I would get an alert light to let you know it's still on. Might not be good to pull up to a stop sign with it engaged...

 

Got a floor dimmer switch at NAPA to day I will try to get it installed this weekend.

 

is it the same wire for a 99? want to do this to mine too!