Yer I also thought that. but I looked at the wiring diagram & thought it might be a faulty illumination/tail light relay. the reason I say this is that my misses was driving behind me once & the tail lights also went out.
The fuel gauge is very inaccurate also, so I replaced the fuel sender & still the same.
Any idea where it grounds for the cluster? ill also check for pinched wires.
Edit: Judging from the poor wiring diagram I have, looks like all of the dash components are grounded below the ashtray?