A New Jersey man who’s been behind bars for the last three years is still stalking president-elect Donald Trump — eerily telling a Manhattan courtroom Monday he’d be in Washington, D.C. on Inauguration Day.

“Please advise Donald that I’ll be in the United States Supreme Court on or around Jan. 20, when he enters the Oval Office,” diehard Republican Frank Monte told Manhattan Supreme Court Judge Mark Dwyer before throwing a tantrum and refusing to undergo what will be his third competency exam.

The 46-year-old has been languishing behind bars since Feb. 2014, when he waltzed into Trump Tower and plucked a picture of himself off a security desk that warned staffers not to allow him on the premises.

Monte faces a slew of charges for the trespass, as well as other Trump-centric crimes, including falsely naming Trump Towers as his home address on his drivers license.

“I don’t really have a conflict with Mr. Trump, just with [state Attorney General] Eric Schneiderman and our district attorney here,” Monte snapped Monday.

“He’s been making accusations that I’ve been acting up in the courtroom and acting illogically,” he said, side-eyeing the prosecutor, saying assistant DA Kenn Kern had been “spreading rumors” that he “tried to Kill Donald Trump and his staff.”

The outburst came after the alleged stalker’s newly assigned attorney, John Nicholas Iannuzzi, brought up a potential conflict-of-interest —- telling the judge he’d represented the soon-to-be Commander-in-Chief in a real estate case from 2009 to 2013.

Judge Dwyer asked if Iannuzzi could stay on through Monte’s next exam, at which point Trump’s zealous admirer flew off the handle.

“I refuse at this time to speak to any more of his doctors!” he yelled repeatedly, adding, “They’re just trying to jam me up on Rikers Island!”

“You can advise your client Mr. Trump that I’ll be in Washington at the same time he is,” Monte hissed at the end of the appearance, to no one in particular.

Switching gears, the fanatic then eagerly submitted a makeshift resume to Judge Dwyer, hoping it would convince the jurist to allow him to represent himself.

It included his honorable military discharge, a brokers license, and other documentation–including unclear paperwork from a Rolls Royce and Bentley dealership, Monte said.

“If I was the kind of person you say I am, I never would have been permitted to interact with those sorts of clients,” he said, smiling.

Monte will return to court Feb. 17.