Hello l have a 2009 Cadillac cts that I'm trying to install a module that splice into the ECM fuse wiring. I called the guy and he had sent me a diagram that said the ECM wire was red / white and was the only HOT wires behind the fuse box in the rear. I checked out all the wires with a dmm and all the wires are red / white and Hot! I need help to get all the juice from my Dc Alt thanks for your help