ok, im trying to wire up my torque converter to lock up by the flick of a switch. why? because ive converted from tpi->carb and it doesnt lock up on its own now. ive posted a few questions on the electrical board and it was suggested that i try on this one. i have a tan w/black stripe, 2 purples, a green and a yellow comeing out of the tranny. the green doesnt go anywhere, and the tan with black stripe sets off the fasten seatbelt alarm/light. what exactly do i need to do to make my torque converter lock up? and how will i know if it locked up? will it click(loud enough so i can hear it)? does it have to be moveing for me to lock it up? i have tryed appling power to, and grounding the green wire and nothing happens. i think it starts heating up and frying if i apply power to the green one.

 

Check out www.700r4.com They have a good lockup diagram
on their site "Bosch Relay Kit Wiring Diagram". I have a Hella
driving light relay (kinda generic), and it wires up the same way.
I've found three or four different diagrams, but they all do basically the same thing.

 

https://www.thirdgen.org/newdesign/t...ueswitch.shtml

 

hmm.... isnt there anyone out there whos done a tpi->carb conversion, who has the same color wires comein out of the trany as i do? im "asumeing" the car has to be moveing in order for the torque converter to lock up because its "hydrolicly" opperated?

 

Do you want it to lock up in 4th only?

 

i want it to lock up with the flick of a switch. but its kind of hard to wire something like that up if the car has to be running/moveing to test it. i might wire the switch up backwards and have it rip parking gear out or something when i turn the key. but i just drove it on the highway going 100km's/hr and it was only going about 2000 rpm. it doesnt really seem like i need to lock it up at all. my fuel miliage cant be that bad if its only going 2 grand @100kms/hr

 

Fuel mileage isn't the biggest concern. Not having your TCC lock up in 4th apparently causes alot of heat in the tranny because of cruising near stall speed.
It's pretty easy to hook up a relay to lock the TCC in 4th, or just go to the tech articles and find the lockup switch there.
Easy.

 

damn man..... im starveing, im gona go score me some food

 

The pnk/blk wire on one side of brake switch is hot wire from 10 A. gauges fuse. The ppl wire on other side of brake switch goes to plug on tranny to energize TCC solenoid.
Tan/blk wire coming out of plug is from TCC solenoid. If you wire one side of your switch to tan/blk and wire the other side of your switch to a wire to GROUND, when you flip the switch to close the contacts, the converter should lock up. This does not run the
wiring through the fourth gear pressure switch. Therefore,
whenever you flip the switch, the converter should lock up, and
it should unlock when you push on the brake pedal.
This info was taken from Haynes Camaro '82-'92 24016 if you
want to check it out for yourself. Happy New Year!

 

I meant to say that the converter would remain unlocked as long as the brake pedal was pushed (as a safety feature). When the pedal is released, the converter should lock up again.

 

i just got a 700R4. there is nothing connected. i noted 2 or 3 places that electronics seem to hook up to... which one is lockup controller? which one does what?

 

should be a white square plug on driver side of tranny in middle above pan rail behind the shift shaft lever linkage piece, four pins connector with only two with metal pins in them. thats for converter,m thats all the electronics there should be if its s 700r4 and not a 4L60E

 

ill get some pics that might help huh?

 

i know its a bit late, but thanks for the info Nordbert and everyone else who replyed. just so you know, my asdl is useless without the computer, so that tech article does not apply to me. i had a feeling that tan with black stripe needed to be grounded, but its in the engine compartment, so wireing up a switch is gona be a bit tricky. im guessing the wire used to go through the passanger side pannel and to the ecm. i also have a green wire that goes no where, wtf does that do??? hey, whats the worst that can happen if i have too much fluid in the tranny?

 

The diagram I have indicates that the green wire goes to the
normally-open fourth gear pressure switch. I would wire the
tan/blk to the green and put 12v. to the purple wire on the
cruise control/lockup switch at the brake pedal. This would
complete the circuit when the transmission shifts into fourth
which SHOULD cause the converter to lock up.

 

Have to be careful with that one. Some pressure switches are Normally open, and some normally closed. The one in my Haynes manual shows N.C. I had verified this with an ohmmeter while driving. When it shifts into 4th, the switch opens.

 

Thanks for pointing that out, 88TAJeff. The diagram I have does
not designate N/C or N/O. But it does look to be N/C (the
arrow from the ground symbol is pointing toward the dk. grn.
wire which goes into the PCM).

 

uhh, i thought the tan/blk had to be grounded? if i wire it up to the green, do i ground both? so basicaly i dont need a manual switch? i can wire this up so it will lock up normaly, by itself? or do i still need the switch?