The murphy switchgauges are fantastic safety equippment , but the best install is pure mechanical , so an electric failure would not be a hassle.
I have installed
GlowShift Gauges" <firstname.lastname@example.org> , I chose the series with both dial and digital readout.
All electric , but we seldom go beyond the Bahamas , so there fine for us.
Their EGT does not require a special wire from the factory .