On Friday, October 23, 2015 at 5:49:14 PM UTC-4, Oren wrote:
How does a ground work in a vehicle tail light without an
electrode in earth?

Posted 5 days ago. "Problem is your term 'ground'. Which ground? Chassis ground? Analog ground? Floating ground? Receptacle ground? Ground bus in a breaker box? Digital ground? Some are even electrically interconnected and are still electrically different."

Silly Rabbit. Tricks are for kids.