March 1 - Fitch Ratings has affirmed the ratings of Delphi Automotive PLC (DLPH) and its Delphi Corporation (Delphi) subsidiary at 'BBB-'. In addition, Fitch has downgraded Delphi's secured revolving credit facility and secured Term Loan A ratings to 'BBB-' from 'BBB'. Fitch affirmed Delphi's senior unsecured notes rating at 'BBB-'. Delphi's ratings apply to a $1.5 billion secured revolving credit facility, a $575 million secured Term Loan A and $1.8 billion in senior unsecured notes. The Ratin