Addled former Mets ace Dwight Gooden was arrested Monday night for driving under the influence after heading the wrong way down a one-way street in Newark, NJ — just weeks after another DUI bust involving cocaine, sources told The Post.

The legendary ex-pitcher known as “Doc” — who has been in and out of rehab for years for drug and alcohol addiction — was a mess when he was picked up on Vincent Street near Ferry Street in the Ironbound section around 11:10 p.m., sources said.

“He pissed himself. He was clearly buzzed, really kind of f–ked up,” said an Essex County law enforcement source.

Still, Gooden, who lives in Piscataway, “was cooperative and polite,” the source said.

The source added that Gooden told cops at the scene that he was diabetic. It’s unclear if he actually is, although his late father was diabetic.

Gooden’s car, a four-door black Chrysler, was towed after his arrest, and he was taken to University Hospital in Newark, sources said. A hospital operator said the medical center had no patients by that name Tuesday afternoon.