Both gauges don`t work. With this wiring kit 1958-1959 Chevy Truck Complete Wiring Set, V8 from ecklers.
There is an adapter for the ign switch. Must not be getting power. Anything to check first?
I replaced the old temperature sender ,in case it was bad. The gas sender works at the tank.
I checked it on another truck. Truck cranks fine. Just no power there.
