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I have the new LS3 crate motor and the related ECM from performance parts but do not have a wiring diagram. Can any one direct me to the proper place that might have a diagram. Either dowload or get the info I need. The motor is in and running but still would like to get the diagram. I found a wiring diagram for the 08 Vette but would like the proper one Thanks!!
 

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i would check with GM. but mainly they will tell you, power and grounds and your reference wires, plus the wiring that is on the ECU harness and to the sensors and other items on the engine.
 
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