We?re about a week away from finishing up DC circuits. We?re doing combination parallel right now. Here?s a simpler one compared to what?s to come. Once we start AC things are going to get a whole lot more complicated. They give us voltage and resistance across each resistor than have to figure out the relationship between them and figure out the voltage and amperage across each of them by breaking them down into series relationships than going backwards and figuring out each of the values. It?s not that bad once we know how. I?ll be able to use it someday to determine which lights best suit each tractor.