My E350 {on a camper chassis,but i dont think that should make a difference}gauges are really acting weird.......as soon as i turn the key ,the oil pressure pegs to high....temp pegs to high (on a cold engine)and ammeter pegs to discharge and jumps around.....several days trying to locate the problem with no luck.....has to be a common power source for gauges.....only thing i found so far was a burnt connection on the blower motor relay in the distribution box..replaced same...blower now working..can someone help???afraid to drive it without working gauges.....92E 350..460 engine