700r4 TCC Lockup Wiring, please Help?
01-19-2017, 10:54 PM
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700r4 TCC Lockup Wiring, please Help?
Hi everyone, I first wanted to say that I don't have a third gen. it's a c1500 pickup. I never get answers back from Fullsize Chevy. I have done major things to this truck, engine swap, tranny rebuild, exhaust, Carb swap (HOLLEY 4160), suspension rebuild, loooootts. 
Now i just want my lockup back, and I need help with the wiring. I know I can get a vacuum switch and all that fancy stuff, but funds are gone, no job, all I have is a Toggle Switch. It is an 89 Tranny, I know that has a big part in this, I know there is the purple, lt. blue, and tan/black wires. From my ATSG manual (TRANS MODEL MZM) there is a temp. switch, 4-3 downshift switch, 4th clutch switch, and two wire tcc solenoid.
I would also like to have the brake switch disconnect the circuit when brake pressed. 
Does anyone know where I can find GOOD diagrams, or could help me through this.
I'd appreciate the help and advice.
Now i just want my lockup back, and I need help with the wiring. I know I can get a vacuum switch and all that fancy stuff, but funds are gone, no job, all I have is a Toggle Switch. It is an 89 Tranny, I know that has a big part in this, I know there is the purple, lt. blue, and tan/black wires. From my ATSG manual (TRANS MODEL MZM) there is a temp. switch, 4-3 downshift switch, 4th clutch switch, and two wire tcc solenoid. I would also like to have the brake switch disconnect the circuit when brake pressed. Does anyone know where I can find GOOD diagrams, or could help me through this. I'd appreciate the help and advice.
01-19-2017, 11:23 PM
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Re: 700r4 TCC Lockup Wiring, please Help?
Use the Search feature in this forum
Search Term = TCC
User = John in RI
I've replied to a couple threads over the years about TCC lock-up. Not that my info is what your looking for ( might be ) but it will give you a good list of threads to read thru.
Good Luck !
Search Term = TCC
User = John in RI
I've replied to a couple threads over the years about TCC lock-up. Not that my info is what your looking for ( might be ) but it will give you a good list of threads to read thru.
Good Luck !
01-20-2017, 06:48 AM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 700r4 TCC Lockup Wiring, please Help?
You may not find wiring diagrams for your truck on these pages. May have to resort to buying a factory service manual for your truck. That will have what you need so you can properly locate the wiring in your truck.
Yrs ago I did a tpi swap on a 1990 1500 and had to use the service manuals from the dealer.
Yrs ago I did a tpi swap on a 1990 1500 and had to use the service manuals from the dealer.
03-10-2017, 12:49 PM
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Re: 700r4 TCC Lockup Wiring, please Help?
Well I got it together finally. Sorry I have been helping my parents lately. What worked was. Jump the blue wire to the ecu ground wire. Ground edu wire to a good ground. The purple wire from the brake switch to the trans harness gets spliced and a toggle switch added. I now have lock up in 2nd 3rd and 45th (: thanks guys!