Ok, putting all your X Y's and Z's out of the picture.

It's a fact that it takes power to turn an alternator to convert mechanic power to electrical power. The more power you draw from the alternator, the more power it takes from the motor to be able to convert that power. It's simple physics. You can't get more out of what you put in.
If you wish not to accept physics and how things work, then I nor anyone else can help you.

Yes, the more light bulbs you add to the circuit, the more power will be drawn from the engine, up to the point of the alternators max output.

Read the link I posted earlier. It was not from the "how stuff works" website. I wouldn't believe everything that the "how stuff works" website says anyways, because I have found several things that are incorrect. They explain how things work for the general person to understand in a general way. They do a pretty good job at explaining most of the stuff in layman's terms, but they are not always correct in their anaylogies.