i was caught with the top and doors off in a HUGE downpour and nothing (besides my ipod a phone) got messed up! i think that it's safe for anything to get wet inside, BUT taking a hose to it may be a bit too much
I figured that I could actually get the interior wet as long as I stayed away from the dash...using the rain argument of Blackmarketg4. I wonder if the window vent on top of the dash actually drains somewhere else....that would make sense due to these things are made to handle an occasional downpour. I am just worried about the electrical, but then I thought about how these things can ford some pretty deep stuff with a snorkel....
I got the stock speakers which I plan to replace anyways, I just don't want to hasten their death for no reason. I wouldn't cry if I had to replace the radio either...I really want a Serius capable head unit....
Jacks or Better - looks like they got some rain at green ridge? When I was up there a few weeks ago it was so dry and dusty with few puddles around. The dust almost seems to be worse as it finds it way into every possible place inside. But it looks like you had a great time!
For the dash....a spray bottle filled with water and car wash soap. There's no pressure and it's more precise. It may take a while longer, but it's a safe way to go. The dash board is allegedly sealed around the electronics so that any water that gets in is diverted away. Where to, I'm not sure and how much it can tolerate will come down to trial and error. I wasn't willing to risk it. If some got splashed up or if I got caught in a rain storm, fine. But I didn't want to hit full power with a hose.
Roll bar pads...upholstery cleaner and firm (not super stiff, but not a toothbrush either) brush. Soak, scrub and vac.
Sand....shop vac for the big stuff and soap and water for the rest. Just don't be in a hurry to put the carpet back in. You may even need to Shop Vac it to get some standing water out.
You need to get mud out of the fabric peieces quickly.
A product I'm really starting to be impressed with is Oxy Clean. I've used it to get blue dye from jeans out of a pair of khakis and even got 6 years of grime out of my uniform brass. I'm sure it will also work for the upholstered pieces.
Castrol Super Clean is also a good product for grease and mud.
My cousin and I took my TJ on some gas lines as well as some river trails up in WV once. It took me three days to get it cleaned. I had to take out the carpet, the back seat, roll bar pads, drop the windshield and took the top completely off. We had the top rolled back and all that mud slid down into every crack and crevice. I even had a glob of mud 3" deep into the A/C vents.