Mike I think you've pointed out something that I hadn't made note of in the past - that the clock should be showing whether the ignition is on or off. Mine currently is not showing with the ignition off so perhaps it is only a voltage line that is down and not the clock/trip module that is at fault.

The problem now is finding the fuse that controls the clock/trip computer. I've looked in my owners manual and also on the fuse discription inside the fuse box and can't find any label that identifies the clock/trip computer. I've removed a few of the more obvious fuses to see if I could disable the clock/trip computer by trial and error but have not run across the fuse that controls it. Is it possible that the clock/trip computer doesn't have a fuse?