2:42 PM PT -- Paul Pelosi was dead set on performing field sobriety tests as long as it meant he didn't have to do the big one ... a breathalyzer.
TMZ has obtained dashcam video that shows what PP was put through after his car crash, and it looks like he was really wanting to show CHP officers that he was fine and not impaired ... insisting he could do balancing acts and whatever else they needed him to do.
Watch ... when one officer suggests just skipping all that and getting straight to blowing into a machine -- which is really all you need -- Paul says he'd rather do the other FSTs first. The officer asks him repeatedly if he's sure about that ... seeing how Paul appears a bit unsteady.
In the end, the officer says he suspects he's been drinking ... noting the dude can barely stand on his own without having to hold on to something. It seems that, among other clues, were enough for them to throw on the cuffs and drag him to jail.
Paul Pelosi's crash site from his DUI arrest looks worse than reports initially indicated ... as evidenced by the photos you can now see from the scene.
TMZ has obtained a ton of pictures that were taken on the night of May 28 in Napa, where House Speaker Nancy Pelosi's husband was busted for drinking and driving. We knew he was in some sort of accident with a Jeep ... but we didn't know the extent of the damage.
Check it out ... you can see both the Jeep and Paul's Porsche on the side of the road. It appears as though one or both vehicles tore through some wooden fencing ... which may have been connected to a business or vineyard of some sort.
It also looks like Paul's ride was more roughed up than the Jeep -- the rear of his car is smashed in. Of course, you also see Paul himself here ... milling around the wreckage.
The cops have said all along that Paul's car was the one that was hit by the Jeep. Nevertheless, CHP suspected he was under the influence that night -- in the end, they took him in.
He just pled guilty to DUI this week ... receiving a sentence of 3 years probation and 5 days jail time, with credit for time served. He got credit for 4 days, 2 of which were for good behavior ... the final day will be served through 8 hours in a court-ordered work program.
The other parts of his probation entail attending 3 months of a DUI education course and having an interlock device installed in his vehicle for a year. He was also ordered to pay fines and restitution for the property damage.