What does the cryptic crossword clue "Show mild surprise with faulty wires by one area (5,2,7)" mean?

The wordplay uses an anagram. anagram of WIRES + BY + ONE + AREA = RAISEANEYEBROW The answer is RAISEANEYEBROW.

Show mild surprise with faulty wires by one area (5,2,7)

Daily Mail Cryptic #17218 | 8 Down | 2023-10-31 flower