I just got back from DV a few days ago. You will not find hookups anywhere right now.. all campgrounds and established (named) dry camps in the park are closed due to the statewide closure order. Commercial campgrounds in CA are also closed.
Camping rules and map are here:
www.nps.gov
It's a beautiful time to go but it will be cold at night (down in the mid 30s) especially if you're up high- many of the camping opportunities are 1000 to 4000 feet above sea level. T-shirt weather in the daytime.
There is NO diesel at Stovepipe Wells. Only gasoline. Diesel is close to $5/gal at Furnace Creek and in Shoshone, CA. I suggest filling up in Beatty, NV or Pahrump, NV where it was about $2/gal cheaper. CA fuel taxes are high, and there aren't many options near the park. Bring ALL of your food. A single can of vegetable soup was $9.50 at the Furnace Creek general store. Water and dumpsters are available at FC and SPW.
Dispersed camping in the park is not like camping in a national forest. Most of the roads that you can camp along are narrow (one lane), loose gravel with washouts and no real spots to turn around other than vacant campsites. The sites are just disturbed wide spots where other people have pulled a couple feet off the road. No trailers, and anything over 25ft is really pushing it. Most of the spots are on sloped alluvial fans and are not level. I didn't see any RVs that were dispersed camping, only tents, truck campers and campervans. That's not to say it'd be impossible, but pack carefully as the contents of your cabinets may end up on the floor from the side to side rocking if you exceed ~5 mph. And get to your campsite before nightfall. It's hard enough to see and assess the "sites" in the daytime. There are many illegal sites so watch your trip odometer as you get off the road and make sure you've gone at least 1 mile or you're risking an expensive ticket.
It is
extremely quiet at night so I tried to avoid even running my furnace and when I did it was only on the lowest setting. A generator would be heard for miles and spoil a unique magical experience for potentially dozens of people. Don't be that guy. If you "have to", run it during the day at a paved parking area.
Enjoy!