I have the same problem with my 93 LS400. I just got the car 9 months ago and have not noticed the problem until the winter came. Here are the details of the problem. It only occurs in the morning(I suppose its due to the long time that the car has been in the cold overnight), and only when the temperature is under 30 degrees F. Although most of the indicators on the panel don't come on, the high beam along with Drive, L1, and L2 do come on. Although the needles are not illuminated the temp gauge, the speedometer, and the tachometer needles do work, that is they move appropriately. The only gauge that does not work under this condition is the Fuel gauge. All the faulty indicators and gauges start working and illuminate after I drive and warm up the car for 10 - 15 minutes. Is this the kind of time frame you guys are seeing?