1) which wire connects to the battery that would carry the charge to the battery? A vo/reg has a plug that captures AC or both waves [4 total] out of those 2 wires from the stator. The one thick wire out of the v/reg; goes to a fuse and that is the DC conversion wire. So basically looking at a v/reg box, dual wires in from the stator is AC, and a single [heavy] wire out of the v/reg is DC and is fused to the battery (+) side.
2) a. Is it possible the power cable from the battery to the solenoid could wear away with use? No. Think about it. If it glowed red, a brittle sound appears as you push the cable, then yes. 10 years worth of one second or two at the starter motor has to have that wire hot to the touch. But if still supple and no noise moving the plastic, then not enough heat to cause the molecules to change that drastic of a cable change. If say a burnt up resistor or diode on a motherboard is [the same as] a starter cable glowing red, the copper color has changed? If it got that hot, then yes, I would look at that heat as say a burnt out diode. Then you think again: edison or at&t do not tear up the road or climb poles every 10 years to change wires, why are you?
b. 'More juice' with a larger cable. I think there is this balance between current needed and wire size matching? So if I have that formula, all I am doing is wasting energy out the battery? I need more energy to cover more cable surface. So either the power out the battery is minimal or I see there is still more surface to fill if a molecule has to bump on each other, there is just more bump cooling off what the original cable has on reserve for anyway, right?
Signed,
Make sense?