A second suspect in the drag-racing accident that killed a 17-year-old has
 been charged with second-degree reckless endangerment and illegal speed
 contests, Dave Huey, the Orange County executive assistant district attorney,
 said yesterday.   Since both suspects in the case are teens and have been given youthful offender status, Huey refused to release their names.
 However, according to earlier reports, the second suspect is 18-year-old Douglas Carter of Chester.  Carter, now a college student, was arraigned on the misdemeanor charges in Town of Blooming Grove Court two weeks ago and released on an appearance ticket. A late-night race in April between Carter and another driver ended in the crash that killed Christopher Byrnes. Byrnes was a passenger in the second car. The driver of the other car, Paul Weinberger, 18, was charged with the same misdemeanors in early December, after a county grand jury found enough evidence to prove that the teens were drag racing.
   If found guilty, both teens could face up to six months in jail. A hearing is set for Feb. 5 in Town of Blooming Grove Court.