torque converter lock up install

[cumminsVP2001]

hey guys, just a quick question that i cant find the answer to. im trying to hook up a lock up switch. i have the tst diagram, but i cannot for the life of me figure out which kind of "jumper" i need to use. searching for a couple hours last night yielded no results to what i was trying to find. so, if someone has a link to the jumper i need, or an install video, or any help i would appreciate it!

[IBMobile]

What is the tst diagram you have?

[Mopar1973Man]

@IBMobile has the best mystery switch setup. You might want to look at his design.

[cumminsVP2001]

7 hours ago, IBMobile said:

What is the tst diagram you have?

https://www.tstproducts.com/Torque Converter Lockup Switch.pdf

 

i just decided to make my own jumper cause the 3rd store i went to still didnt have it. hopefully it works. im using 18 guage wire for it and for everything in wiring up the switch.

Edited August 5, 2018 by cumminsVP2001

[IBMobile]

OK, I've seen that one before.

 

This is the one I made.

 

 

[cumminsVP2001]

8 hours ago, IBMobile said:

OK, I've seen that one before.

 

This is the one I made.

 

i actually saw that one in all my research, but man that is way over my head. i have very little experience in electrical things. i just got to the point where i am comfortable splicing/tapping wires and running switches lol

will an 18 gauge wire work for that jumper in the fuse box? a couple that i saw were much thicker wires. i just dont want any problems. 

[IBMobile]

7 hours ago, cumminsVP2001 said:

will an 18 gauge wire work for that jumper in the fuse box?

I'm not sure because I didn't go that way.   The best way to find out is open the FSM and go to "transmission control system" in the wiring section.   There it will show the color and size of the wires going to the terminals for the transmission relay in the PDC.  With that information you'll be able to choose the wirer size needed for the modification your going to do.

[cumminsVP2001]

1 hour ago, IBMobile said:

I'm not sure because I didn't go that way.   The best way to find out is open the FSM and go to "transmission control system" in the wiring section.   There it will show the color and size of the wires going to the terminals for the transmission relay in the PDC.  With that information you'll be able to choose the wirer size needed for the modification your going to do.

well i got it all wired up. switch lights up when on, but its currently raining here, so going to have to wait till tomorrow to check if i got everything wired correctly

[cumminsVP2001]

well that was a fail.

i double checked all my connections and everything seems to be good. I have my ground on the firewall and the signal from my pcm tapped and going to the signal side of my toggle switch. the middle prong on my switch is for the lighted part within the switch which i have tapped with a wire going to the battery from my water/meth kit and that wire melted a little but within the splice after my drive.

like i said. im not the best with electronics. please help guys. i have a drag race event this weekend and want to be able to test with lock up switch throughout the week!

reading over this thread https://www.cumminsforum.com/forum/98-5-02-tech-articles/70447-tc-switch-howto-pics.html the only thing i can think is that i have my wires backward on my switch. i have it hooked up as follows

from switch=where its going

 

ground=firewall

signal logo=pcm connection

light symbol=tapped into wire going to battery from water/meth system

 

on that forum it says connect GROUND wire to b11 orange/lback stripe to a switch. so should the wire tapped into the orange wire go to the prong labeled "ground" on my switch? and then the ground wire on firewall to the picture of a signal on my switch??

[cumminsVP2001]

This is my switch.i feel like I've tried every way possible to hook this thing up. This morning I had the switch turned off and drove for a bit and tourned it on, and nothing. Turned it back"off" where the light wasn't lit up and slowed down to take a corner and the truck started to shake so I quick and reached down and flipped it the other way, which one would assume would be "on" but the light was off. I then got out on the main road and tried various speeds and gears while flipping the switch and waiting a few seconds and nothing would happen.

[Haggar]

You need to be careful with that type of switch.  The internal circuitry has a "ground" in it.  (Has to do with the board for the LED lights.)  this could confuse your sense to ground for the TC.

 

If you must have a light, you need to use a double pole switch.  This will allow you to have two completely separate circuits in the same switch.  One will only hook to your TC circuit.  The other pole will be used to switch on and off a light. 

 

HTH

 

Hag

[Mopar1973Man]

No illuminated may be used on any control circuits. It has to be a normal ON/OFF switch no light or LED. 

 

This was a common problem with people building my high idle kit back in the past they attempted to power the light switch with the 5V from the sensor but screwed the system because the ECM could see the LED load and current flow causing errors to be thrown. 

 

Buy a standard ON/OFF (SPST) and use that.

[cumminsVP2001]

I guess I don't really need a light. I'll have to return it and get a switch like I have for my water/meth kit. Like I said I don't know crap about electrical stuff. Hopefully that's the fix.

[cumminsVP2001]

Should this work? Does it matter which way I hook it up? 

[Mopar1973Man]

That should work just fine.

[cumminsVP2001]

1 minute ago, Mopar1973Man said:

That should work just fine.

does it matter which wire goes where? on my water/meth kit i just took a guess and it worked fine

[Mopar1973Man]

SPST (single pole single throw) switch have no right way per say. Either way when the switch is OFF the connection is BROKEN between the wires. When the switch is ON the two wires are connected together. 

 

It when you get to SPDT (Single Pole Double Throw) Now there is a bit more to worry about being there is a way to hook up and never get a connection.

[cumminsVP2001]

thanks for your help guys, just got back from a little drive. locked shifts are a blast! ahha. if i get on it and flip it in second it locks up good and shifts throughout. but if im just cruising in a gear it doesnt always lock up. why would this be? could it because i had my OD off? 

[Mopar1973Man]

11 hours ago, cumminsVP2001 said:

could it because i had my OD off? 

 

If OD OFF is lit. Then it should shift to 3rd gear and lock up. If it's not lit and you driving with enough TV cable pull it will hold 3rd gear unlocked. You'll notice transmission temperatures rise fairly quickly. My 46RE in my 1/2 to does this. When I notice the hang and not up shifting I'll just hit the OD OFF and get the torque converter to lock in 3rd. 

[cumminsVP2001]

2 minutes ago, Mopar1973Man said:

 

If OD OFF is lit. Then it should shift to 3rd gear and lock up. If it's not lit and you driving with enough TV cable pull it will hold 3rd gear unlocked. You'll notice transmission temperatures rise fairly quickly. My 46RE in my 1/2 to does this. When I notice the hang and not up shifting I'll just hit the OD OFF and get the torque converter to lock in 3rd. 

your saying they will rise quickly while locked? i thought keeping it locked lowers temps. Either way, based off my adrenaline my temps peaked art 140 even after a half dozen pulls and stop and go traffic.