When upgrading the alternator to 60+ amps change the charge wire to 8 gauge and go straight to the battery or starter thus bypassing the ammeter.
Why bypass the ammeter you say ?
Because it will fail in time and leave you in tenny shoe mode . Quick fit move the wires to only one lug of the ammeter .
Better fix install a shunt across the ammeter.
But It also can melt the bulkhead connector.
Install a volt meter .
See the link above in post #20 for blinking headlights for more info.
