High ho silverado

I am doing a swap and going from a 4l80e to a 60e, I did my own harness and have changed the pin out on the valve body plug but when it came to the prndl switch the wiring instructions I had only left a ground and two pink wires on the bigger plug. In a PDF I had from another's build they used the ground and green and white wires. Both of those were on a newer trans than what I'm using. Does anyone know the rite wires I'd need for my pcm to operate the trans properly. I know that the pink ones are for the neutral and park start but not sure which ones are needed for sure. Any help would be appreciated, thanks