Vaughan burst onto the scene as a 16-year-old, becoming the Premier League's youngest scorer with a goal against Palace at Goodison Park in 2005.
But his progress ever since has been badly affected by injury.
However, he insists he is now in good shape and determined to move his career forward with a successful spell at Selhurst Park.
"It's all just about getting some time on the pitch and getting as many games as possible for me," he told the Croydon Advertiser.
"I'm confident that if I can do that the timing will return and I can start finding the net on a regular basis."