That is the voltage limiter. Its to reduce voltage for the fuel sender and the temperature sender to 5 volts.Ok here another question what’s the capacitor looking thing that that plugs into my new gauge relay even with the new relay the gauges still don’t work thanks
67 Coronet R/T
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Should I change itThat is the voltage limiter. Its to reduce voltage for the fuel sender and the temperature sender to 5 volts.
If both gauges work then no need to change it.Should I change it

Well, depending if burns up with points open or closed. Althought tipically should fail with points closed since is its natural position.with my binders, if that thing burns up it will likely smoke the gauges. Everybody is gong electronic