Keith Olbermann compares himself to an expensive chandelier to David Letterman

Current TV has fired Keith Olbermann and replaced him with Eliot Spitzer.

Just days after he was fired from Current TV, Keith Olbermann admitted Tuesday he "screwed up."

Speaking to CBS' "The Late Show with David Letterman" Olbermann conceded he had contributed to his own demise, according to excerpts from the pre-recorded interview due to screen later Tuesday night.

"I screwed up," Olbermann said after Letterman asked whether Current TV executives, including the cable network's co-founder, former Vice President Al Gore, knew what they were doing.

"I screwed up really big on this. Let's just start there. I thought we could do this. It's my fault that it didn't succeed in the sense that I didn't think the whole thing through."

Speaking to Letterman, Olbermann suggested the network was not capable of supporting him and his show.

"I didn't say, 'You know, if you buy a $10 million chandelier, you should have a house to put it in. Just walking around with a $10 million chandelier isn't going to do anybody a lot of good, and it's not going to do any good to the chandelier,'" he said.

"And then it turned out we didn't have a lot to put the house on to put the chandelier in, or a building permit, and I, I should have known that. And it is, it is my fault at heart.

"You're the chandelier?" Letterman asked.

"I'm the chandelier," Olbermann responded. "You are always pointing out how big my head is, so I think it's a suitable analogy."

On Friday Current TV announced it had fired the former top-rated MSNBC host and would replace him with former New York Gov. Eliot Spitzer.

The left-leaning network, launched in 2005, indicated that Olbermann had failed to honor the terms of his five-year, $50 million contract.

In the wake of his threatened legal action, Letterman asked Olbermann if he would see all the money from his contract, The Hollywood Reporter said.

"Well, up to last Thursday I got my money," he said. "The nice judge will decide whether or not I get more of my money."

He also addressed media reports his complaints about car services may have contributed to his dismissal.

"The story is that we changed car services a couple times. I got rid of them. Maybe there were like eight different car services," Olbermann told Letterman.

"The problem that's left out of that side of the story was that in at least one occasion, the car service stopped coming to get me because the bill hadn't been paid."

He said he also suspected bill-paying tardiness was the reason the lights went out during his show on more than one occasion.

"I don't think we paid the electric bill," Olbermann said, adding, "I come back from a commercial break and they started to get brown. They started to get dimmer and I thought, 'Here it comes. Mom always said this would happen.'"