Re: TBI to Vortec Swap question
pin 1 to fuel pump relay (it sends 12 volts to activate the relay) do not try to run the fuel pump directly off this wire pcm faluire will result.
pin 4 goes your speed signal buffer (under your dash) to run the speedo and cruise module (this may or may not work or the speedo will be way off) I will post some more diagrams for this later
pin 5 will go to the check engine light bulb
pin 10 goes to your brake light switch the switch has 4 wires. hook it to the
pink&white wire (not the pink wire) this tells the pcm when your brakes are applied to unlock the torque converter.
pin 11 goes to the dianostic connecter ( you will need a OBD II connecter)
i will give diagram for this too.
pins 13& 18 will go to a ignition hot.
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