What is the proper voltage reading from ground to the middle of the backglass heating grid line?

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Multiple Choice

What is the proper voltage reading from ground to the middle of the backglass heating grid line?

Explanation:
The heating grid is wired as two equal resistance sections in series across a 12-volt supply, with the middle point acting as a center tap. Because the two halves are equal, the voltage at the middle relative to ground sits at half of the total supply. In a typical 12-volt system, that means about 6 volts from ground to the middle of the grid. Small variations can occur due to wiring resistance or meter loading, but the intended reading is around 6 volts. This setup allows even heating of the backglass without applying the full 12V to the entire grid at once.

The heating grid is wired as two equal resistance sections in series across a 12-volt supply, with the middle point acting as a center tap. Because the two halves are equal, the voltage at the middle relative to ground sits at half of the total supply. In a typical 12-volt system, that means about 6 volts from ground to the middle of the grid. Small variations can occur due to wiring resistance or meter loading, but the intended reading is around 6 volts. This setup allows even heating of the backglass without applying the full 12V to the entire grid at once.

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