Charging circuit, diesel for GMC Sierra 2500 HD (2002-2012)

38 8 57 44 GEN SIG CHG SIG DATA BS DATA BS BRN WIRE CHARGE COMPUTER DATA LINES SYSTEM DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) LEFT GENERATOR LOGIC MEGA FUSE RED/BLK WIRE RIGHT GENERATOR TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT)