I have 16196396 PCM swapped into a 350 manual set up.

Does anyone out there know how the range selector works and what pins i need to ground or supply voltage to in order to get the pcm to think its in the right gear?

Right now with all the range selector inputs open when i plug the laptop in it says its in 2nd gear. I need to make it think its in drive for the manual set up correct? Or do i want it to say nuetral?