protecting a gauge
I want to protect whats called the "battery gauge" on a '64 vette. Here's the layout.
Wire from Alt Bat terminal goes to horn relay. The horn relay terminal has 3 wires all spliced together in same connector. BLk/wht goes to "battery gauge", red (red-1 say) goes to big terminal on starter solenoid, another red (red-2 say) goes to a junction of red wires which feed the ign sw bat term, fuse panel, several accesories. Back at the starter solenoid, the red-1 is spliced into same connector as a black wire. This black wire goes to other side of "battery gauge".
So I want to protect this "battery gauge". Not sure where to install fusible links and/or any inline fuses, and what gauge of fuse if required. I know the fusible links should be 2 wire gauges smaller (12ga requires 16ga fl).