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Is there a fuse that controls digital dash on 300ZX - ECM box is good since went out suddenly and completely along with the accel gauge compass odometer now runs backwards too?

There is not a single fuse that controls the entire digital dash on the 300ZX.

The digital dash is powered by several different fuses, and if any of these fuses are blown, the dash will not work properly.

Below are the fuses that are associated with the digital dash:

- 7.5A fuse in the fuse box in the engine bay, labeled "meter & clock"

15A fuse in the fuse box in the engine bay, labeled "DOME & CLSTR"

- 10A fuse in the fuse box in the passenger compartment, labeled "DIG CLUSTER"

- 15A fuse in the fuse box in the passenger compartment, labeled "INST LT"

If the digital dash is not working, you should check these fuses first.

If you find that one of the fuses is blown, replace it with a fuse of the same amperage.

If the dash still does not work after you have replaced the blown fuse, you may need to take your car to a qualified mechanic for further diagnosis.

Here are some other potential causes of a non-functioning digital dash:

- Faulty wiring

- Bad connection between the digital dash and the ECM

- Faulty ECM

If you have ruled out all of the possible causes listed above, you may need to replace the digital dash.