(section: 2 / paragraph: c / line: 1)
No, the voltage across any two points ≤ 9 V as stated by the manufacturer labels. If a step-up regulator steps a 9V battery up to 12V, this would be a violation.
(section: 2 / paragraph: g / line: 1-2)
The "leading part of the vehicle" is the forward-most part in the direction of the vehicle's travel.
(section: 5 / paragraph: j / line: 1)
No. The rule is clear. ...please see rule 5.g.