ASE A6 Electrical Electronics Practice Test

Backup light circuit.

8. The right-side backup light in the diagram above is dim. The other light is normal. Which of the following is causing this condition?

  • A. Resistance at point A.
  • B. An open at point B.
  • C. An open at point C.
  • D. Resistance at point D.
Backup light circuit.


Answer A is wrong. Resistance in the connection at point A results in dim (both) backup lights.

Answer B is wrong. An open circuit in the neutral safety switch results in inoperative backup lights.

Answer C is wrong. An open at point C results in an inoperative left-side backup light.

Answer D is correct. Excessive resistance in the connection at point D results in a dim right-side backup light.