Almost positive that I have it wired right on my hammer shifter for my TH350 install. Have the orange/black connected through switch on the shifter to the black/white. Car will prime the fuel pump at key on but you go to start it and doesn't even click. Wired the reverse lights the same way using the small brown connected to the light green through the switch and they work fine.

Am I using the wrong wires, there's only 2 left that went to the stock shifter plug, a large yellow and large brown i believe.

Can anyone chime in? Ready to get my car fired up.

 

https://ls1tech.com/forums/automatic-transmission/815618-th350-th400-frequently-asked-questions.html