i realize some of my questions have been answered already in this forum. however i have some more questions regarding driving in the sand. I'm from ny & renting a house down in the outer banks in nc in a month or so. i already know the precautions about getting stuck as well as the usual procedures such as lowering down the tire pressure between 10-15 psi, pulling the 2 fuses under the hood & use my head as far as common sense goes. also, only hit the 4-wheel button on the dash ONLY if i get stuck & once rolling disengage. one question is I'm not sure if something is wrong with my 4-wheel button on dash since it does not light up, whether a quick press or i hold it down & release. possibly my fuse is bad? another thing is once i hit the sand i realize i must take out tire pressure. since I'm a contractor i will bring w me my air compressor which goes up to 120psi but i need power since there are no outlets on the beach, LOL! i stopped by my local auto zone & found some Duralast inverters that hook up directly to the truck battery. my issue is what wattage is needed & what is overkill? they have a 400 watt(800 peak), a 750 watt(1,500 peak) & a 1,000 watt(2,000 peak). also any other concerns i should be aware of & am i good to go.......because my wife & i really, really want to rent this house directly on sand which has about a 3 mile drive on the sand. thanks for all your help!!!