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I only need to read the vin/year through the OBD2 connector.
12v @ pin 19,20, 57 & 75
Ground @ 1&40
CAN + @ pin 58 to OBD2 Pin 2
no CAN - on OBD2 connector (pin 10)
I dont see a CAN - on the LS1 ECM pinout.
Harness was built by someone else. Power and Ground verified.
Still cannot read with HPtuners MPVI
thanks
LS1 wiring- only want to read vin/year 
