New Jersey ? “I’m New Jersey Gov. Jon Corzine, and I should be dead.”

So begins Corzine’s public service announcement promoting seat belt use, which was released Thursday ahead of the Memorial Day weekend. The governor was critically injured in an April 12 car crash in which he wasn’t wearing a seat belt.

Corzine worked with the National Highway Traffic Safety Administration on the message, taping it May 15 at the governor’s mansion in Princeton, where he is recuperating. Video and audio versions were released to radio and television outlets nationwide.

In the ad, the 60-year-old Corzine details his injuries as video plays of the wrecked SUV he was riding in. He broke his leg, 11 ribs, collar bone and sternum in the crash and spent 18 days in the hospital.

He notes how he lost more than half his blood, spent eight days in intensive care and had to use a ventilator.

“It took a remarkable team of doctors and a series of miracles to save my life when all I needed was a seat belt,” Corzine says.

He then advises, “I have to live with my mistake. You don’t. Buckle up.”