I am installing an 87 350 TPI and 700r4 into my 90 camaro.
I bought the drivetrain as a whole, but the wiring harness was destroyed. I just bought a new harness, but it doesn't have the four prong connector to operate the torque converter lock up function. I have learned how to get the lockup to work without running through the harness (direct brakelight switch connection), but I need to know if I need to connect the other other three prongs (that I don't know the wires to) in order to get the tranny to work. I have full wiring diagrams and a service manual for this car, so any description of what wires to splice will make total sense to me.
Thank you very much,
Joe

 

You have all the info you need right there