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Gunshot wounds be damned — nothing beats a good smoke after a shootout.

A thug who allegedly gunned down a Brooklyn used-car dealer and was himself shot in the spine seconds later by a dealership employee incredibly begged the man who paralyzed him for a light as he lay bleeding on the pavement and waiting for medics.

Aaron Adderly, 27, on trial in Brooklyn Supreme Court for the brutal slaying of father-of-two Bobby Carnival, watched silently from his wheelchair yesterday as used-car salesman Anthony Basso testified about the bizarre request.

Adderly “was lying on the floor. He asked me to light his cigarette for him,” Basso, 35, said. “[I said,] ‘You didn’t give my friend a chance to give you whatever he had in his pocket, and you expect me to give you a cigarette?’ ”

Prosecutors allege that the crime unfolded as follows:

Adderly, along with co-defendants Dario Gedeon and Peter Innocent, allegedly went to Cars on Utica on Avenue M in Old Mill Basin two days after Christmas in 2008 and asked about buying a black Lexus.

Suddenly, two of the bandits, including Adderly, pulled out guns.

“Run your s – – t!” Adderly shouted before firing the bullet that struck Carnival, 35, in the back and eventually killed him.

Basso testified he looked up to see Adderly aiming his gun at him, so he snatched a pistol that had been dropped in the scuffle.

“It was either him or me,” Basso said. “As soon as he pointed the gun at me, I unleashed; I unloaded the whole clip.”

Four bullets struck Adderly, including one in the spine. The other two goons fled.

Basso approached the bleeding gunman and disarmed him.

That was when Adderly reached in his pocket for a cigarette, and, shockingly, asked for a light.

“I called him a piece of s – – t. I said, ‘I will not give you a light for your cigarette,’ ” Basso said.

“I wish he was dead!” Basso shouted. “I wish I hit him in the head. [Adderly] killed my friend.”

All three assailants were charged with murder.

The alleged mastermind of the heist, Misha Louis, had purchased a $3,000 used car from Carnival, and then alerted some friends that he was an easy target because he did a lot of cash business.

Carnival died at Kings County Hospital an hour after being shot.

He left behind a young son and daughter, and a wife, Dianna, who wept throughout yesterday’s testimony.