700 r4 swap wiring questions
#1
Racer
Thread Starter
Member Since: Aug 2010
Location: bethpage NY
Posts: 263
Likes: 0
Received 0 Likes
on
0 Posts
700 r4 swap wiring questions (pics)
so i have the 700 r4 and to wire the lock up i need a brake switch but there are 3 wires in the plug so i dropped the pan to check it out
so the black (im going to assume is the ground) runs from the plug all the way back to the solenoid?? (blk-) it says
one brown wire runs to the green caps
and the other brown wire runs from the plug to one of the yellow caps and then from the other cap back to the solenoid (red +) it says
any suggestions of how this should be wired up?? any help is appreciated
so the black (im going to assume is the ground) runs from the plug all the way back to the solenoid?? (blk-) it says
one brown wire runs to the green caps
and the other brown wire runs from the plug to one of the yellow caps and then from the other cap back to the solenoid (red +) it says
any suggestions of how this should be wired up?? any help is appreciated
Last edited by mj9311; 09-20-2010 at 11:29 AM.
#2
Le Mans Master
Can't help you inside the pan, but there are kits available from Painless or Howell or Street and Performance. Basically most hook the 4th gear pressure switch to the lockup ground and have 12v supplied externally. This makes it so that if you are in 4th gear and apply 12V it will lock the converter. You couple that with a brake switch and you have a system. Mine also has a vacuum switch so it breaks the lockup circuit when there is no vacuum. Hope this helps.
#3
Le Mans Master
I don't trust my memory 100%, but the switch with the single wire is the 4th gear switch and the 2 wire is the 3-4 pulse switch. Pulse senses the shift and unlocks the TCC when the 4th switch sees enough pressure to lock. IIRC the idea was to slow down the 4th TCC lock a little so you didn't feel a "shift bump" as GM called it.
Pull the 4th gear switch out and hook it to a regulated air supply- slowly apply pressure with it hooke to a multimeter (ohms scale) and see where it closes. IF it closes about 40 psi, use that to ground the TCC solenoid and forget the other one.
It's been a long time, so double check!
Pull the 4th gear switch out and hook it to a regulated air supply- slowly apply pressure with it hooke to a multimeter (ohms scale) and see where it closes. IF it closes about 40 psi, use that to ground the TCC solenoid and forget the other one.
It's been a long time, so double check!
#4
Racer
Thread Starter
Member Since: Aug 2010
Location: bethpage NY
Posts: 263
Likes: 0
Received 0 Likes
on
0 Posts
thanks for the input all i need to know is how to wire it from the plug out i know it needs a 12v feed and a brake switch but i am still uncertain what wires go to what
#5
Le Mans Master
Use the black wire as it is- it's going to the switch, so when is sees pressure it goes to ground. Use the white wire from the solenoid as the +12v feed.
I'd still hook that switch to an air source and see where it closes. It really needs to be at 40PSI or a little over so you don't get a shudder if it comes on to early. It seems to work out the 4th gear pressure that switch sees is close enough to 1:1 with road speed- 40PSI=40 MPH
I'd still hook that switch to an air source and see where it closes. It really needs to be at 40PSI or a little over so you don't get a shudder if it comes on to early. It seems to work out the 4th gear pressure that switch sees is close enough to 1:1 with road speed- 40PSI=40 MPH
Last edited by TimAT; 09-20-2010 at 11:22 PM.
#6
Racer
Thread Starter
Member Since: Aug 2010
Location: bethpage NY
Posts: 263
Likes: 0
Received 0 Likes
on
0 Posts
Use the black wire as it is- it's going to the switch, so when is sees pressure it goes to ground. Use the white wire from the solenoid as the +12v feed.
I'd still hook that switch to an air source and see where it closes. It really needs to be at 40PSI or a little over so you don't get a shudder if it comes on to early. It seems to work out the 4th gear pressure that switch sees is close enough to 1:1 with road speed- 40PSI=40 MPH
I'd still hook that switch to an air source and see where it closes. It really needs to be at 40PSI or a little over so you don't get a shudder if it comes on to early. It seems to work out the 4th gear pressure that switch sees is close enough to 1:1 with road speed- 40PSI=40 MPH
#7
Le Mans Master
Take the switch out, hook it to a regulated air supply and use a meter to see what the pressure is when it closes. Noting complicated.