Instruments not working
 

The car run fine. The speedometer works but the instrument gauges ( Bat. fuel, oil pressure) do not work. Could it be a fuse on the ignition under the dash that is blown? Or is it something else? It is on a 1950 Ford tudor Thanks

Re: Instruments not working
 

First check the grounds.

Re: Instruments not working
 

Power supply is most likely There is a little thing called an IVR (instrument voltage regulator ) on the back of the cluster . They are squareish and about one inch by one half usually with two studs for the terminals. Power comes in and then out to the instruments. My guess would be yours is defective. Tim

Re: Instruments not working
 

Looking at the wiring diagram the instruments get their power from
the ignition switch, black wire with green tracer.

Re: Instruments not working
 

Bob C has it right. There is no fuse, there is no IVR. For example, the fuel gage has two wires connected to it. One from the sending unit and the other the power Bob mentions.