I have been going through the two fuse boxes under the hood, and have narrowed the problem down to four circuits. This is where things get interesting, and I have included photos below to refer to. If I have either one of the headlight fuses installed, the drain occurs. I also removed the wires going to the power post for the second (front) fuse box. If I hook up either of the two wires shown in the photos, the drain will again return. Of course, everything collects in the main wiring loom, and this is where it begins to get uncomfortable.
My question on this is, what do the two disconnected wires go to? and is there a common point where the wiring tends to get damaged in the high mileage 4th gen cars? Thanx in advance.