67Dart273 said

Sorry bob that statement is misleading. "Charge the battery." The truth is that this does not mean much. The severe voltage drop that would cause ON A ONE WIRE SYSTEM would render a modern hotrod with efi, fans, pump(s) and other electrical loads nearly useless.

Even with an external regulator, the voltage drop on no10 from front to rear of the car---and even a front mount battery--could cause problems even if nothing else that it overheats the wire

Just to pick some figures out of the air, no10 can have as much as 1 ohm/ 1000ft when heated. So say, 20 ft and charging at 100A is 2V drop. Even if only 1V drop that's 7-8% at 12-14V which is consdiderable

The other issue on a "too small" charge line is "where are you pulling loads?" if you junction the loads up front from the charge line, then maybe the engine bay loads are fine when running and charging, but what about when the charge system sags and the battery has to supply power all the way back through the too-small charge line?

If loads are taken off the main cable, then the too-small charge drop is added--all the way to the trunk, and then what little more coming back up front on the main cable "there is some."

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