Hi Guys/Gals,
I am getting ready to finish up my bench harness interface and wanted to add the LT1 stuff to it. Here's the pinouts I have so far. It's been so long since I did any LT1 bench stuff I can't remember what I did and can't find my old cable from years ago :( I sort of remember it only using one connector to the PCM though. I like to have the fuel pump sense on my bench setup besides just the MIL cuz if the fuel pump runs and shuts off like normal, pretty much everything else works. Could someone check the two fuel pump pins I noted and let me know for sure? I appreciate any help and/or suggestions.
LT1 OBD1/2
Red Pin 2 Ground
Red Pin 7 Fuel Pump enable to relay +12v out
Red Pin 25 Fuel Pump enable VATS
Black Pin 6 Analog Ground
Black Pin 15 12v Constant
Black Pin 16 Analog Ground
Black Pin 28 5v
Black Pin 29 5v
Black Pin 30 12v Switched
Black Pin 31 12v Constant
Blue Pin 1 Ground
Blue Pin 3 12v Switched
Blue Pin 7 Serial Data <<<<< OBD2
Blue Pin 9 MIL
Blue Pin 20 Output/Field Service Enable (Diag Port)
Blue Pin 29 Serial Data <<<<< OBD1
Blue Pin 30 Serial Data <<<<< OBD1
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