Trust me I dont get off on clogging the boards with teh same old question, but all the searching I've been doing hasnt been much help, I guess there's just so many threads about it that the useful and relevant ones have fell to the bottom of the list.

Here's what I've been able to find out:

BUt searching here, I find people talking about adding +12v to the D pin... and I'm not exactly sure what the difference between the B and C pins if they both go to ground, only one goes to ground only in 4th gear... And then if D is not used, then how come everything is talking about running it to a ground and just adding switched power to the A pin?

Im just having a hard time figuring out what's going on, and everyone has their own method and I've been unable to logicalyl follow it to understand what exactly these different methods have in common to get to the root of it.

Im guessing I just need fused +12v to pin A, but beyond that I'm totally lost.

Someone told me to run a wire from pin C to a switch, then run that back to Pin B. So that seems to indicate to me that grounding C locks the converter, but to run it through Pin B would make sure it only grounds in 4th, and I can use the switch to control whether orn ot I want it locked in 4th.

But still I've seen so many conflicting things I'm starting to wonder if some of these 700r4s are completely different.

 

The switch on pin B is only to signal the ECM that the transmission is in 4th. It has nothing to do directly with the operation of the TCC. In some configurations it will be grounded in 4th and open otherwise, in others it will be grounded in any gear except 4th and open otherwise.

Unless you've hacked the wiring on the car, you can forget about pin A. It'll supply +12v through the brake switch whether you've got an ECM or not.

Pin D isn't grounded all the time, it's grounded by the ECM to complete the TCC solenoid circuit to lock the TCC. You can ground it somehow to control the lockup yourself.

 

Well I've got to redo the wiring to the transmission plug since it got snagged when the motor came out. But it should be easy enough to figure out.

So is it grounding Pin C that activates the solenoid or Pin D? I'm seeing contradictions on that point all over the place.

 

I said pin C before, when I should have said pin D. Pin C has no connection (and probably doesn't even have a pin in the cavity).

The wiring inside the transmission looks something like this. Exact details may vary slightly, but it'll at least be similar.