This thing led me down the yellow brick road into a dead end . When you touch the terminal to the power stud from the 200a fuse it sparks and the battery drain jumps up . So I spent some time trying to figure out the pos wiring diagram to see where these go . Then tested the individual 3 red wires to determine which one . Guess what none of them . The even though they spark and drain jumps up the current isn't going there . My mistake was measuring load on the neg side of battery , safer but doesn't give you as accurate info as if tested on the positive side . Why ? Because the positive side has 2 wires , when tested separately the power drain actually is coming from the larger wire that goes to starter and alternator . Now it doesn't draw the higher power until you hook up the smaller power wire that goes to the 200a fuse . So hooking up that wire is either triggering something to come on and draw thru the 2 ga. wire . According to the diagram the starter and alternator are hooked to the 2ga wire . Attached to the alternator is the power control module , so i'm thinking this or the alternator . Any input would be appreciated . Also nothing attached to OBD