ok i am almost to the point that i can drive this thing, but i cant get it to fire. it cranks, but there is no signal to the fuel pump through the ecm, so i hot wired that one, and still no fire. if i hot wire power to the pin on the fuse block for the switched 12 v, i get the same result. so do i need a signal somewhere from a park or clutch switch to the ecm that will allow it to start? i found this on lt1swap.com

C12 - PPL - 420 - TCC Brake Switch/Cruise Control Release Signal
D3 - LT GRN - 275 - Park Neutral Position Switch Park Signal
F11 - DK GRN - 1433 - Park/Neutral Start Switch Signal

these pins on the back of the underhood fuse block are empty. according to lt1swap.com, i only needed to attach the pink switched power and the fuel pump lead to the fuse block. i got my constant 12v to the bulkhead connector elsewhere. if i need to hook up a switch from my brake pedal, would that need 12v to the f11 pin above? just looking for any advice so that i dont fry something with 12v that was expecting ground signal. thanks, nick.

 

The TCC brake wire goes to the factory brake switch. Your converter lockup wont be right without this

P/Neutral wires need to be grounded for auto or manual

 

i was hoping master pocket might chime in. so if i'm running a manual will the tcc switch matter? i'm going to try to get a minute at lunch to ground the other two and see what happens.

 

Its not needed. The old brake switch wire ran to the ECM. If you were going 4L60E, then it would be necessary to run it to the PCM