200-4r valve body parts question...

[HeyStarJoe]

Hi all...came over from V8Buick with a trans question...

I'm putting a CZF from an '87 Monte SS in my '72 Skylark. I'm installing the Painless 60110 torque converter lockup kit in it and as you know it replaces the wiring harness to the solenoid and 4th gear switch.

My valve body has another switch near the rear that doesn't get plugged in now. I can't figure out if that's a 3rd gear switch or a temperature switch on an '87 CZF.
I've read a bunch of threads here and I'm still confused whether it's needed or not.

I'm not concerned if it's a temp switch. I am concerned if it's needed for 3rd gear.
Or should I be?
None of the lockup kits you can buy for this, or any instructional videos, even mention that second switch on the valve body. Obviously the car won't have a trans computer or ECM so I'd have no way to control it regardless.

Suggestions?
I appreciate it!

Joe

 

[GBGN1]

Post a picture

 

[N2BUICK]

Not wanting to hijack your thread.
I have a similar question about my spare BRF valve body (unmarked)
Posting pics, maybe similar to yours

 

[GBGN1]

Thats a 3rd gear switch. Temp switches are bolted at the rear and have 2 prongs.

 

[N2BUICK]

What is the other pressure switch for?

 

[GBGN1]

rear is the 3rd and the one on top is 4th

 

[HeyStarJoe]

Torque converter is a D5, and the valve body has a paint stamped CZ5 (?) on the side also.

 

[GBGN1]

Torque converter is a D5, and the valve body has a paint stamped CZ5 (?) on the side also.

Thats a temp switch

 

[HeyStarJoe]

Thats a temp switch

Thank God! That's what I was hoping.
Thank you very much

 

[dynoman]

Contact Dave Husek . He can set you up with what you would need for the swap , it's the only trans he works on .
516-285-1103

 

[gsgns4me]

Just for reference, here is a factory wiring diagram for 1987 model 200-4R's..............

 

[HeyStarJoe]

Just for reference, here is a factory wiring diagram for 1987 model 200-4R's..............

View attachment 402079

Thank you. That's the only drawing/diagram I could find that remotely looked like mine. That's why I wasn't sure how accurate it was.