Counterbound T207 TC reported T416 sideheadlight was not working. TC stepped out at YCK checked andconfirmed that 'B' side headlight was not working. Counterb ound T207 TC reported T416 side headlight was not working. T ~~~~~ 3543 Counterbound T207 TC reported T416 side headlight was not working. TC stepped out at YCK checked and confirmed that 'B' side headlight was not working.  Replaced 3543 B side headlight. Monitored and function tested ok. Done by: Sufhian/Henry 45258